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Finding the Fourth Proportional to 79,209.75, 109,282.12 and 45,193.69

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Solution

The fourth proportional to 79,209.75, 109,282.12 and 45,193.69 is: 62,351.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,209.75 : 109,282.12 = 45,193.69 : x
  2. Step 2: Convert to fraction form
    79,209.75/109,282.12 = 45,193.69/x
  3. Step 3: Cross multiply
    79,209.75x = 109,282.12 × 45,193.69
  4. Step 4: Simplify right side
    79,209.75x = 4,938,862,253.82
  5. Step 5: Solve for x
    x = 4,938,862,253.82/79,209.75
  6. Step 6: Final answer
    x = 62,351.70

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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.