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Finding the Fourth Proportional to 73,006.40, 100,748.80 and 39,472.32

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Solution

The fourth proportional to 73,006.40, 100,748.80 and 39,472.32 is: 54,471.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,006.40 : 100,748.80 = 39,472.32 : x
  2. Step 2: Convert to fraction form
    73,006.40/100,748.80 = 39,472.32/x
  3. Step 3: Cross multiply
    73,006.40x = 100,748.80 × 39,472.32
  4. Step 4: Simplify right side
    73,006.40x = 3,976,788,873.22
  5. Step 5: Solve for x
    x = 3,976,788,873.22/73,006.40
  6. Step 6: Final answer
    x = 54,471.78

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1.5x scale

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.