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Finding the Fourth Proportional to 61,841.97, 92,686.95 and 28,515.78

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Solution

The fourth proportional to 61,841.97, 92,686.95 and 28,515.78 is: 42,738.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,841.97 : 92,686.95 = 28,515.78 : x
  2. Step 2: Convert to fraction form
    61,841.97/92,686.95 = 28,515.78/x
  3. Step 3: Cross multiply
    61,841.97x = 92,686.95 × 28,515.78
  4. Step 4: Simplify right side
    61,841.97x = 2,643,040,675.07
  5. Step 5: Solve for x
    x = 2,643,040,675.07/61,841.97
  6. Step 6: Final answer
    x = 42,738.62

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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.