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Finding the Fourth Proportional to 61,689.74, 92,541.12 and 19,575.80

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Solution

The fourth proportional to 61,689.74, 92,541.12 and 19,575.80 is: 29,365.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,689.74 : 92,541.12 = 19,575.80 : x
  2. Step 2: Convert to fraction form
    61,689.74/92,541.12 = 19,575.80/x
  3. Step 3: Cross multiply
    61,689.74x = 92,541.12 × 19,575.80
  4. Step 4: Simplify right side
    61,689.74x = 1,811,566,456.90
  5. Step 5: Solve for x
    x = 1,811,566,456.90/61,689.74
  6. Step 6: Final answer
    x = 29,365.77

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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.