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Finding the Fourth Proportional to 61,617.14, 84,992.52 and 40,397.78

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Solution

The fourth proportional to 61,617.14, 84,992.52 and 40,397.78 is: 55,723.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,617.14 : 84,992.52 = 40,397.78 : x
  2. Step 2: Convert to fraction form
    61,617.14/84,992.52 = 40,397.78/x
  3. Step 3: Cross multiply
    61,617.14x = 84,992.52 × 40,397.78
  4. Step 4: Simplify right side
    61,617.14x = 3,433,509,124.61
  5. Step 5: Solve for x
    x = 3,433,509,124.61/61,617.14
  6. Step 6: Final answer
    x = 55,723.28

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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.