Home / 72,831.04-100,505.28-40,565.56

Finding the Fourth Proportional to 72,831.04, 100,505.28 and 40,565.56

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Solution

The fourth proportional to 72,831.04, 100,505.28 and 40,565.56 is: 55,979.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,831.04 : 100,505.28 = 40,565.56 : x
  2. Step 2: Convert to fraction form
    72,831.04/100,505.28 = 40,565.56/x
  3. Step 3: Cross multiply
    72,831.04x = 100,505.28 × 40,565.56
  4. Step 4: Simplify right side
    72,831.04x = 4,077,052,966.16
  5. Step 5: Solve for x
    x = 4,077,052,966.16/72,831.04
  6. Step 6: Final answer
    x = 55,979.61

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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.