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Finding the Fourth Proportional to 61,702.97, 85,086.45 and 52,780.01

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Solution

The fourth proportional to 61,702.97, 85,086.45 and 52,780.01 is: 72,781.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,702.97 : 85,086.45 = 52,780.01 : x
  2. Step 2: Convert to fraction form
    61,702.97/85,086.45 = 52,780.01/x
  3. Step 3: Cross multiply
    61,702.97x = 85,086.45 × 52,780.01
  4. Step 4: Simplify right side
    61,702.97x = 4,490,863,256.43
  5. Step 5: Solve for x
    x = 4,490,863,256.43/61,702.97
  6. Step 6: Final answer
    x = 72,781.97

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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.