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Finding the Fourth Proportional to 88,831.92, 122,527.92 and 57,039.40

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Solution

The fourth proportional to 88,831.92, 122,527.92 and 57,039.40 is: 78,675.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,831.92 : 122,527.92 = 57,039.40 : x
  2. Step 2: Convert to fraction form
    88,831.92/122,527.92 = 57,039.40/x
  3. Step 3: Cross multiply
    88,831.92x = 122,527.92 × 57,039.40
  4. Step 4: Simplify right side
    88,831.92x = 6,988,919,040.05
  5. Step 5: Solve for x
    x = 6,988,919,040.05/88,831.92
  6. Step 6: Final answer
    x = 78,675.76

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1.5x scale

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.