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Finding the Fourth Proportional to 79,023.78, 109,045.11 and 45,034.14

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Solution

The fourth proportional to 79,023.78, 109,045.11 and 45,034.14 is: 62,142.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,023.78 : 109,045.11 = 45,034.14 : x
  2. Step 2: Convert to fraction form
    79,023.78/109,045.11 = 45,034.14/x
  3. Step 3: Cross multiply
    79,023.78x = 109,045.11 × 45,034.14
  4. Step 4: Simplify right side
    79,023.78x = 4,910,752,750.06
  5. Step 5: Solve for x
    x = 4,910,752,750.06/79,023.78
  6. Step 6: Final answer
    x = 62,142.72

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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.