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Finding the Fourth Proportional to 79,169.88, 109,214.76 and 47,330.40

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Solution

The fourth proportional to 79,169.88, 109,214.76 and 47,330.40 is: 65,292.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,169.88 : 109,214.76 = 47,330.40 : x
  2. Step 2: Convert to fraction form
    79,169.88/109,214.76 = 47,330.40/x
  3. Step 3: Cross multiply
    79,169.88x = 109,214.76 × 47,330.40
  4. Step 4: Simplify right side
    79,169.88x = 5,169,178,276.70
  5. Step 5: Solve for x
    x = 5,169,178,276.70/79,169.88
  6. Step 6: Final answer
    x = 65,292.23

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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.