Home / 90,502.06-124,449.96-78,544.64

Finding the Fourth Proportional to 90,502.06, 124,449.96 and 78,544.64

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Solution

The fourth proportional to 90,502.06, 124,449.96 and 78,544.64 is: 108,007.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,502.06 : 124,449.96 = 78,544.64 : x
  2. Step 2: Convert to fraction form
    90,502.06/124,449.96 = 78,544.64/x
  3. Step 3: Cross multiply
    90,502.06x = 124,449.96 × 78,544.64
  4. Step 4: Simplify right side
    90,502.06x = 9,774,876,683.96
  5. Step 5: Solve for x
    x = 9,774,876,683.96/90,502.06
  6. Step 6: Final answer
    x = 108,007.23

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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.