Home / 90,542.76-124,690.66-65,352.36

Finding the Fourth Proportional to 90,542.76, 124,690.66 and 65,352.36

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Solution

The fourth proportional to 90,542.76, 124,690.66 and 65,352.36 is: 89,999.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,542.76 : 124,690.66 = 65,352.36 : x
  2. Step 2: Convert to fraction form
    90,542.76/124,690.66 = 65,352.36/x
  3. Step 3: Cross multiply
    90,542.76x = 124,690.66 × 65,352.36
  4. Step 4: Simplify right side
    90,542.76x = 8,148,828,900.96
  5. Step 5: Solve for x
    x = 8,148,828,900.96/90,542.76
  6. Step 6: Final answer
    x = 89,999.78

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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.