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Finding the Fourth Proportional to 79,319.54, 118,820.66 and 47,712.17

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Solution

The fourth proportional to 79,319.54, 118,820.66 and 47,712.17 is: 71,472.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,319.54 : 118,820.66 = 47,712.17 : x
  2. Step 2: Convert to fraction form
    79,319.54/118,820.66 = 47,712.17/x
  3. Step 3: Cross multiply
    79,319.54x = 118,820.66 × 47,712.17
  4. Step 4: Simplify right side
    79,319.54x = 5,669,191,587.92
  5. Step 5: Solve for x
    x = 5,669,191,587.92/79,319.54
  6. Step 6: Final answer
    x = 71,472.82

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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.