Home / 90,872.93-136,330.95-28,543.43

Finding the Fourth Proportional to 90,872.93, 136,330.95 and 28,543.43

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Solution

The fourth proportional to 90,872.93, 136,330.95 and 28,543.43 is: 42,821.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,872.93 : 136,330.95 = 28,543.43 : x
  2. Step 2: Convert to fraction form
    90,872.93/136,330.95 = 28,543.43/x
  3. Step 3: Cross multiply
    90,872.93x = 136,330.95 × 28,543.43
  4. Step 4: Simplify right side
    90,872.93x = 3,891,352,246.50
  5. Step 5: Solve for x
    x = 3,891,352,246.50/90,872.93
  6. Step 6: Final answer
    x = 42,821.91

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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.