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Finding the Fourth Proportional to 72,471.60, 108,658.80 and 33,008.40

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Solution

The fourth proportional to 72,471.60, 108,658.80 and 33,008.40 is: 49,490.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,471.60 : 108,658.80 = 33,008.40 : x
  2. Step 2: Convert to fraction form
    72,471.60/108,658.80 = 33,008.40/x
  3. Step 3: Cross multiply
    72,471.60x = 108,658.80 × 33,008.40
  4. Step 4: Simplify right side
    72,471.60x = 3,586,653,133.92
  5. Step 5: Solve for x
    x = 3,586,653,133.92/72,471.60
  6. Step 6: Final answer
    x = 49,490.46

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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.