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Finding the Fourth Proportional to 61,034.80, 91,565.25 and 18,913.94

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Solution

The fourth proportional to 61,034.80, 91,565.25 and 18,913.94 is: 28,374.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,034.80 : 91,565.25 = 18,913.94 : x
  2. Step 2: Convert to fraction form
    61,034.80/91,565.25 = 18,913.94/x
  3. Step 3: Cross multiply
    61,034.80x = 91,565.25 × 18,913.94
  4. Step 4: Simplify right side
    61,034.80x = 1,731,859,644.59
  5. Step 5: Solve for x
    x = 1,731,859,644.59/61,034.80
  6. Step 6: Final answer
    x = 28,374.95

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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.