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Finding the Fourth Proportional to 75,255.32, 112,868.40 and 71,508.80

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Solution

The fourth proportional to 75,255.32, 112,868.40 and 71,508.80 is: 107,249.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,255.32 : 112,868.40 = 71,508.80 : x
  2. Step 2: Convert to fraction form
    75,255.32/112,868.40 = 71,508.80/x
  3. Step 3: Cross multiply
    75,255.32x = 112,868.40 × 71,508.80
  4. Step 4: Simplify right side
    75,255.32x = 8,071,083,841.92
  5. Step 5: Solve for x
    x = 8,071,083,841.92/75,255.32
  6. Step 6: Final answer
    x = 107,249.35

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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.