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Finding the Fourth Proportional to 61,730.64, 92,721.78 and 40,700.88

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Solution

The fourth proportional to 61,730.64, 92,721.78 and 40,700.88 is: 61,134.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,730.64 : 92,721.78 = 40,700.88 : x
  2. Step 2: Convert to fraction form
    61,730.64/92,721.78 = 40,700.88/x
  3. Step 3: Cross multiply
    61,730.64x = 92,721.78 × 40,700.88
  4. Step 4: Simplify right side
    61,730.64x = 3,773,858,041.17
  5. Step 5: Solve for x
    x = 3,773,858,041.17/61,730.64
  6. Step 6: Final answer
    x = 61,134.28

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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.