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Finding the Fourth Proportional to 79,087.46, 109,148.12 and 47,255.68

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Solution

The fourth proportional to 79,087.46, 109,148.12 and 47,255.68 is: 65,217.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,087.46 : 109,148.12 = 47,255.68 : x
  2. Step 2: Convert to fraction form
    79,087.46/109,148.12 = 47,255.68/x
  3. Step 3: Cross multiply
    79,087.46x = 109,148.12 × 47,255.68
  4. Step 4: Simplify right side
    79,087.46x = 5,157,868,631.32
  5. Step 5: Solve for x
    x = 5,157,868,631.32/79,087.46
  6. Step 6: Final answer
    x = 65,217.28

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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.