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Finding the Fourth Proportional to 139,624.74, 209,432.66 and 44,854.54

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Solution

The fourth proportional to 139,624.74, 209,432.66 and 44,854.54 is: 67,280.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,624.74 : 209,432.66 = 44,854.54 : x
  2. Step 2: Convert to fraction form
    139,624.74/209,432.66 = 44,854.54/x
  3. Step 3: Cross multiply
    139,624.74x = 209,432.66 × 44,854.54
  4. Step 4: Simplify right side
    139,624.74x = 9,394,005,625.28
  5. Step 5: Solve for x
    x = 9,394,005,625.28/139,624.74
  6. Step 6: Final answer
    x = 67,280.38

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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.