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Finding the Fourth Proportional to 83,885.52, 125,862.84 and 61,810.32

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Solution

The fourth proportional to 83,885.52, 125,862.84 and 61,810.32 is: 92,740.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,885.52 : 125,862.84 = 61,810.32 : x
  2. Step 2: Convert to fraction form
    83,885.52/125,862.84 = 61,810.32/x
  3. Step 3: Cross multiply
    83,885.52x = 125,862.84 × 61,810.32
  4. Step 4: Simplify right side
    83,885.52x = 7,779,622,416.51
  5. Step 5: Solve for x
    x = 7,779,622,416.51/83,885.52
  6. Step 6: Final answer
    x = 92,740.95

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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.