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Finding the Fourth Proportional to 64,131.72, 88,489.12 and 35,831.92

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Solution

The fourth proportional to 64,131.72, 88,489.12 and 35,831.92 is: 49,440.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,131.72 : 88,489.12 = 35,831.92 : x
  2. Step 2: Convert to fraction form
    64,131.72/88,489.12 = 35,831.92/x
  3. Step 3: Cross multiply
    64,131.72x = 88,489.12 × 35,831.92
  4. Step 4: Simplify right side
    64,131.72x = 3,170,735,068.71
  5. Step 5: Solve for x
    x = 3,170,735,068.71/64,131.72
  6. Step 6: Final answer
    x = 49,440.98

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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.