Home / 90,872.88-136,331.39-28,543.38

Finding the Fourth Proportional to 90,872.88, 136,331.39 and 28,543.38

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Solution

The fourth proportional to 90,872.88, 136,331.39 and 28,543.38 is: 42,822.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,872.88 : 136,331.39 = 28,543.38 : x
  2. Step 2: Convert to fraction form
    90,872.88/136,331.39 = 28,543.38/x
  3. Step 3: Cross multiply
    90,872.88x = 136,331.39 × 28,543.38
  4. Step 4: Simplify right side
    90,872.88x = 3,891,358,670.70
  5. Step 5: Solve for x
    x = 3,891,358,670.70/90,872.88
  6. Step 6: Final answer
    x = 42,822.00

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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.