Home / 99,831.28-137,772.75-54,513.48

Finding the Fourth Proportional to 99,831.28, 137,772.75 and 54,513.48

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Solution

The fourth proportional to 99,831.28, 137,772.75 and 54,513.48 is: 75,231.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,831.28 : 137,772.75 = 54,513.48 : x
  2. Step 2: Convert to fraction form
    99,831.28/137,772.75 = 54,513.48/x
  3. Step 3: Cross multiply
    99,831.28x = 137,772.75 × 54,513.48
  4. Step 4: Simplify right side
    99,831.28x = 7,510,472,051.67
  5. Step 5: Solve for x
    x = 7,510,472,051.67/99,831.28
  6. Step 6: Final answer
    x = 75,231.65

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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.