Home / 87,628.63-131,442.94-21,068.76

Finding the Fourth Proportional to 87,628.63, 131,442.94 and 21,068.76

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Solution

The fourth proportional to 87,628.63, 131,442.94 and 21,068.76 is: 31,603.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,628.63 : 131,442.94 = 21,068.76 : x
  2. Step 2: Convert to fraction form
    87,628.63/131,442.94 = 21,068.76/x
  3. Step 3: Cross multiply
    87,628.63x = 131,442.94 × 21,068.76
  4. Step 4: Simplify right side
    87,628.63x = 2,769,339,780.53
  5. Step 5: Solve for x
    x = 2,769,339,780.53/87,628.63
  6. Step 6: Final answer
    x = 31,603.14

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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.