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Finding the Fourth Proportional to 79,046.97, 109,083.63 and 47,209.72

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Solution

The fourth proportional to 79,046.97, 109,083.63 and 47,209.72 is: 65,148.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,046.97 : 109,083.63 = 47,209.72 : x
  2. Step 2: Convert to fraction form
    79,046.97/109,083.63 = 47,209.72/x
  3. Step 3: Cross multiply
    79,046.97x = 109,083.63 × 47,209.72
  4. Step 4: Simplify right side
    79,046.97x = 5,149,807,746.91
  5. Step 5: Solve for x
    x = 5,149,807,746.91/79,046.97
  6. Step 6: Final answer
    x = 65,148.70

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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.