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Finding the Fourth Proportional to 48,499.92, 72,749.84 and 13,439.56

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Solution

The fourth proportional to 48,499.92, 72,749.84 and 13,439.56 is: 20,159.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,499.92 : 72,749.84 = 13,439.56 : x
  2. Step 2: Convert to fraction form
    48,499.92/72,749.84 = 13,439.56/x
  3. Step 3: Cross multiply
    48,499.92x = 72,749.84 × 13,439.56
  4. Step 4: Simplify right side
    48,499.92x = 977,725,839.67
  5. Step 5: Solve for x
    x = 977,725,839.67/48,499.92
  6. Step 6: Final answer
    x = 20,159.33

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1.5x scale

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.