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Finding the Fourth Proportional to 139,752.72, 209,584.95 and 44,961.79

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Solution

The fourth proportional to 139,752.72, 209,584.95 and 44,961.79 is: 67,428.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,752.72 : 209,584.95 = 44,961.79 : x
  2. Step 2: Convert to fraction form
    139,752.72/209,584.95 = 44,961.79/x
  3. Step 3: Cross multiply
    139,752.72x = 209,584.95 × 44,961.79
  4. Step 4: Simplify right side
    139,752.72x = 9,423,313,461.14
  5. Step 5: Solve for x
    x = 9,423,313,461.14/139,752.72
  6. Step 6: Final answer
    x = 67,428.48

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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.