Home / 78,247,117,477.72-117,377,437,243.96-21,586,980,487.81

Finding the Fourth Proportional to 78,247,117,477.72, 117,377,437,243.96 and 21,586,980,487.81

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Solution

The fourth proportional to 78,247,117,477.72, 117,377,437,243.96 and 21,586,980,487.81 is: 32,382,335,978.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,247,117,477.72 : 117,377,437,243.96 = 21,586,980,487.81 : x
  2. Step 2: Convert to fraction form
    78,247,117,477.72/117,377,437,243.96 = 21,586,980,487.81/x
  3. Step 3: Cross multiply
    78,247,117,477.72x = 117,377,437,243.96 × 21,586,980,487.81
  4. Step 4: Simplify right side
    78,247,117,477.72x = 2,533,824,447,494,390,022,144
  5. Step 5: Solve for x
    x = 2,533,824,447,494,390,022,144/78,247,117,477.72
  6. Step 6: Final answer
    x = 32,382,335,978.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.