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Finding the Fourth Proportional to 38,745, 58,118.58 and 12,452.40

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Solution

The fourth proportional to 38,745, 58,118.58 and 12,452.40 is: 18,678.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,745 : 58,118.58 = 12,452.40 : x
  2. Step 2: Convert to fraction form
    38,745/58,118.58 = 12,452.40/x
  3. Step 3: Cross multiply
    38,745x = 58,118.58 × 12,452.40
  4. Step 4: Simplify right side
    38,745x = 723,715,805.59
  5. Step 5: Solve for x
    x = 723,715,805.59/38,745
  6. Step 6: Final answer
    x = 18,678.95

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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.