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Finding the Fourth Proportional to 60,862.80, 91,294.20 and 19,309.80

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Solution

The fourth proportional to 60,862.80, 91,294.20 and 19,309.80 is: 28,964.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,862.80 : 91,294.20 = 19,309.80 : x
  2. Step 2: Convert to fraction form
    60,862.80/91,294.20 = 19,309.80/x
  3. Step 3: Cross multiply
    60,862.80x = 91,294.20 × 19,309.80
  4. Step 4: Simplify right side
    60,862.80x = 1,762,872,743.16
  5. Step 5: Solve for x
    x = 1,762,872,743.16/60,862.80
  6. Step 6: Final answer
    x = 28,964.70

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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.