Home / 87,307.20-120,356.82-69,409.44

Finding the Fourth Proportional to 87,307.20, 120,356.82 and 69,409.44

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Solution

The fourth proportional to 87,307.20, 120,356.82 and 69,409.44 is: 95,683.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,307.20 : 120,356.82 = 69,409.44 : x
  2. Step 2: Convert to fraction form
    87,307.20/120,356.82 = 69,409.44/x
  3. Step 3: Cross multiply
    87,307.20x = 120,356.82 × 69,409.44
  4. Step 4: Simplify right side
    87,307.20x = 8,353,899,476.38
  5. Step 5: Solve for x
    x = 8,353,899,476.38/87,307.20
  6. Step 6: Final answer
    x = 95,683.97

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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.