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Finding the Fourth Proportional to 67,726.40, 101,680.80 and 39,675.20

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Solution

The fourth proportional to 67,726.40, 101,680.80 and 39,675.20 is: 59,566.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,726.40 : 101,680.80 = 39,675.20 : x
  2. Step 2: Convert to fraction form
    67,726.40/101,680.80 = 39,675.20/x
  3. Step 3: Cross multiply
    67,726.40x = 101,680.80 × 39,675.20
  4. Step 4: Simplify right side
    67,726.40x = 4,034,206,076.16
  5. Step 5: Solve for x
    x = 4,034,206,076.16/67,726.40
  6. Step 6: Final answer
    x = 59,566.23

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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.