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Finding the Fourth Proportional to 60,690.35, 91,046.45 and 18,569.66

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Solution

The fourth proportional to 60,690.35, 91,046.45 and 18,569.66 is: 27,857.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,690.35 : 91,046.45 = 18,569.66 : x
  2. Step 2: Convert to fraction form
    60,690.35/91,046.45 = 18,569.66/x
  3. Step 3: Cross multiply
    60,690.35x = 91,046.45 × 18,569.66
  4. Step 4: Simplify right side
    60,690.35x = 1,690,701,211.90
  5. Step 5: Solve for x
    x = 1,690,701,211.90/60,690.35
  6. Step 6: Final answer
    x = 27,857.82

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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.