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Finding the Fourth Proportional to 48,498.80, 72,720.74 and 18,882.56

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Solution

The fourth proportional to 48,498.80, 72,720.74 and 18,882.56 is: 28,313.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,498.80 : 72,720.74 = 18,882.56 : x
  2. Step 2: Convert to fraction form
    48,498.80/72,720.74 = 18,882.56/x
  3. Step 3: Cross multiply
    48,498.80x = 72,720.74 × 18,882.56
  4. Step 4: Simplify right side
    48,498.80x = 1,373,153,278.28
  5. Step 5: Solve for x
    x = 1,373,153,278.28/48,498.80
  6. Step 6: Final answer
    x = 28,313.14

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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.