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Finding the Fourth Proportional to 48,614.30, 72,921.47 and 11,678.30

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Solution

The fourth proportional to 48,614.30, 72,921.47 and 11,678.30 is: 17,517.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,614.30 : 72,921.47 = 11,678.30 : x
  2. Step 2: Convert to fraction form
    48,614.30/72,921.47 = 11,678.30/x
  3. Step 3: Cross multiply
    48,614.30x = 72,921.47 × 11,678.30
  4. Step 4: Simplify right side
    48,614.30x = 851,598,380.10
  5. Step 5: Solve for x
    x = 851,598,380.10/48,614.30
  6. Step 6: Final answer
    x = 17,517.45

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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.