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Finding the Fourth Proportional to 62,622.55, 86,431.86 and 57,578.78

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Solution

The fourth proportional to 62,622.55, 86,431.86 and 57,578.78 is: 79,470.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,622.55 : 86,431.86 = 57,578.78 : x
  2. Step 2: Convert to fraction form
    62,622.55/86,431.86 = 57,578.78/x
  3. Step 3: Cross multiply
    62,622.55x = 86,431.86 × 57,578.78
  4. Step 4: Simplify right side
    62,622.55x = 4,976,641,268.01
  5. Step 5: Solve for x
    x = 4,976,641,268.01/62,622.55
  6. Step 6: Final answer
    x = 79,470.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.