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Finding the Fourth Proportional to 66,472.60, 99,563.10 and 57,724.60

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Solution

The fourth proportional to 66,472.60, 99,563.10 and 57,724.60 is: 86,460.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,472.60 : 99,563.10 = 57,724.60 : x
  2. Step 2: Convert to fraction form
    66,472.60/99,563.10 = 57,724.60/x
  3. Step 3: Cross multiply
    66,472.60x = 99,563.10 × 57,724.60
  4. Step 4: Simplify right side
    66,472.60x = 5,747,240,122.26
  5. Step 5: Solve for x
    x = 5,747,240,122.26/66,472.60
  6. Step 6: Final answer
    x = 86,460.29

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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.