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Finding the Fourth Proportional to 67,060.61, 100,565.80 and 19,665.89

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Solution

The fourth proportional to 67,060.61, 100,565.80 and 19,665.89 is: 29,491.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,060.61 : 100,565.80 = 19,665.89 : x
  2. Step 2: Convert to fraction form
    67,060.61/100,565.80 = 19,665.89/x
  3. Step 3: Cross multiply
    67,060.61x = 100,565.80 × 19,665.89
  4. Step 4: Simplify right side
    67,060.61x = 1,977,715,960.56
  5. Step 5: Solve for x
    x = 1,977,715,960.56/67,060.61
  6. Step 6: Final answer
    x = 29,491.47

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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.