Home / 89,913.24-124,126.90-65,687

Finding the Fourth Proportional to 89,913.24, 124,126.90 and 65,687

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Solution

The fourth proportional to 89,913.24, 124,126.90 and 65,687 is: 90,682.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,913.24 : 124,126.90 = 65,687 : x
  2. Step 2: Convert to fraction form
    89,913.24/124,126.90 = 65,687/x
  3. Step 3: Cross multiply
    89,913.24x = 124,126.90 × 65,687
  4. Step 4: Simplify right side
    89,913.24x = 8,153,523,680.30
  5. Step 5: Solve for x
    x = 8,153,523,680.30/89,913.24
  6. Step 6: Final answer
    x = 90,682.13

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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.