Home / 87,628.57-131,442.85-21,068.70

Finding the Fourth Proportional to 87,628.57, 131,442.85 and 21,068.70

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Solution

The fourth proportional to 87,628.57, 131,442.85 and 21,068.70 is: 31,603.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,628.57 : 131,442.85 = 21,068.70 : x
  2. Step 2: Convert to fraction form
    87,628.57/131,442.85 = 21,068.70/x
  3. Step 3: Cross multiply
    87,628.57x = 131,442.85 × 21,068.70
  4. Step 4: Simplify right side
    87,628.57x = 2,769,329,316.58
  5. Step 5: Solve for x
    x = 2,769,329,316.58/87,628.57
  6. Step 6: Final answer
    x = 31,603.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.