Home / 78,398.05-117,510.68-43,362.85

Finding the Fourth Proportional to 78,398.05, 117,510.68 and 43,362.85

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Solution

The fourth proportional to 78,398.05, 117,510.68 and 43,362.85 is: 64,996.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,398.05 : 117,510.68 = 43,362.85 : x
  2. Step 2: Convert to fraction form
    78,398.05/117,510.68 = 43,362.85/x
  3. Step 3: Cross multiply
    78,398.05x = 117,510.68 × 43,362.85
  4. Step 4: Simplify right side
    78,398.05x = 5,095,597,773.42
  5. Step 5: Solve for x
    x = 5,095,597,773.42/78,398.05
  6. Step 6: Final answer
    x = 64,996.49

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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.