Home / 90,831.62-136,269.32-28,502.12

Finding the Fourth Proportional to 90,831.62, 136,269.32 and 28,502.12

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Solution

The fourth proportional to 90,831.62, 136,269.32 and 28,502.12 is: 42,760.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,831.62 : 136,269.32 = 28,502.12 : x
  2. Step 2: Convert to fraction form
    90,831.62/136,269.32 = 28,502.12/x
  3. Step 3: Cross multiply
    90,831.62x = 136,269.32 × 28,502.12
  4. Step 4: Simplify right side
    90,831.62x = 3,883,963,687.10
  5. Step 5: Solve for x
    x = 3,883,963,687.10/90,831.62
  6. Step 6: Final answer
    x = 42,760.04

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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.