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Finding the Fourth Proportional to 79,307.85, 109,387.49 and 67,352.25

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Solution

The fourth proportional to 79,307.85, 109,387.49 and 67,352.25 is: 92,897.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,307.85 : 109,387.49 = 67,352.25 : x
  2. Step 2: Convert to fraction form
    79,307.85/109,387.49 = 67,352.25/x
  3. Step 3: Cross multiply
    79,307.85x = 109,387.49 × 67,352.25
  4. Step 4: Simplify right side
    79,307.85x = 7,367,493,236.59
  5. Step 5: Solve for x
    x = 7,367,493,236.59/79,307.85
  6. Step 6: Final answer
    x = 92,897.40

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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.