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Finding the Fourth Proportional to 79,266.71, 109,388.96 and 45,279.70

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Solution

The fourth proportional to 79,266.71, 109,388.96 and 45,279.70 is: 62,486.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,266.71 : 109,388.96 = 45,279.70 : x
  2. Step 2: Convert to fraction form
    79,266.71/109,388.96 = 45,279.70/x
  3. Step 3: Cross multiply
    79,266.71x = 109,388.96 × 45,279.70
  4. Step 4: Simplify right side
    79,266.71x = 4,953,098,962.04
  5. Step 5: Solve for x
    x = 4,953,098,962.04/79,266.71
  6. Step 6: Final answer
    x = 62,486.49

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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.