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Finding the Fourth Proportional to 81,476.16, 112,404.60 and 47,479.56

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Solution

The fourth proportional to 81,476.16, 112,404.60 and 47,479.56 is: 65,502.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,476.16 : 112,404.60 = 47,479.56 : x
  2. Step 2: Convert to fraction form
    81,476.16/112,404.60 = 47,479.56/x
  3. Step 3: Cross multiply
    81,476.16x = 112,404.60 × 47,479.56
  4. Step 4: Simplify right side
    81,476.16x = 5,336,920,949.98
  5. Step 5: Solve for x
    x = 5,336,920,949.98/81,476.16
  6. Step 6: Final answer
    x = 65,502.85

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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.