Home / 78,586,580.70-107,663,999.72-75,641,177.70

Finding the Fourth Proportional to 78,586,580.70, 107,663,999.72 and 75,641,177.70

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Solution

The fourth proportional to 78,586,580.70, 107,663,999.72 and 75,641,177.70 is: 103,628,783.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,586,580.70 : 107,663,999.72 = 75,641,177.70 : x
  2. Step 2: Convert to fraction form
    78,586,580.70/107,663,999.72 = 75,641,177.70/x
  3. Step 3: Cross multiply
    78,586,580.70x = 107,663,999.72 × 75,641,177.70
  4. Step 4: Simplify right side
    78,586,580.70x = 8,143,831,734,713,270
  5. Step 5: Solve for x
    x = 8,143,831,734,713,270/78,586,580.70
  6. Step 6: Final answer
    x = 103,628,783.21

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.