Home / 90,363.28-124,705.56-56,391.88

Finding the Fourth Proportional to 90,363.28, 124,705.56 and 56,391.88

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Solution

The fourth proportional to 90,363.28, 124,705.56 and 56,391.88 is: 77,823.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,363.28 : 124,705.56 = 56,391.88 : x
  2. Step 2: Convert to fraction form
    90,363.28/124,705.56 = 56,391.88/x
  3. Step 3: Cross multiply
    90,363.28x = 124,705.56 × 56,391.88
  4. Step 4: Simplify right side
    90,363.28x = 7,032,380,974.85
  5. Step 5: Solve for x
    x = 7,032,380,974.85/90,363.28
  6. Step 6: Final answer
    x = 77,823.44

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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.