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Finding the Fourth Proportional to 99,626.89, 137,483.31 and 57,182.08

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Solution

The fourth proportional to 99,626.89, 137,483.31 and 57,182.08 is: 78,910.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,626.89 : 137,483.31 = 57,182.08 : x
  2. Step 2: Convert to fraction form
    99,626.89/137,483.31 = 57,182.08/x
  3. Step 3: Cross multiply
    99,626.89x = 137,483.31 × 57,182.08
  4. Step 4: Simplify right side
    99,626.89x = 7,861,581,631.08
  5. Step 5: Solve for x
    x = 7,861,581,631.08/99,626.89
  6. Step 6: Final answer
    x = 78,910.24

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.