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Finding the Fourth Proportional to 79,307.52, 109,449.36 and 52,402.80

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Solution

The fourth proportional to 79,307.52, 109,449.36 and 52,402.80 is: 72,319.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,307.52 : 109,449.36 = 52,402.80 : x
  2. Step 2: Convert to fraction form
    79,307.52/109,449.36 = 52,402.80/x
  3. Step 3: Cross multiply
    79,307.52x = 109,449.36 × 52,402.80
  4. Step 4: Simplify right side
    79,307.52x = 5,735,452,922.21
  5. Step 5: Solve for x
    x = 5,735,452,922.21/79,307.52
  6. Step 6: Final answer
    x = 72,319.16

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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.