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Finding the Fourth Proportional to 62,220.52, 85,864.32 and 39,864.52

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Solution

The fourth proportional to 62,220.52, 85,864.32 and 39,864.52 is: 55,013.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,220.52 : 85,864.32 = 39,864.52 : x
  2. Step 2: Convert to fraction form
    62,220.52/85,864.32 = 39,864.52/x
  3. Step 3: Cross multiply
    62,220.52x = 85,864.32 × 39,864.52
  4. Step 4: Simplify right side
    62,220.52x = 3,422,939,901.93
  5. Step 5: Solve for x
    x = 3,422,939,901.93/62,220.52
  6. Step 6: Final answer
    x = 55,013.04

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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.