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Finding the Fourth Proportional to 89,989.02, 134,644.32 and 53,831.52

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Solution

The fourth proportional to 89,989.02, 134,644.32 and 53,831.52 is: 80,544.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,989.02 : 134,644.32 = 53,831.52 : x
  2. Step 2: Convert to fraction form
    89,989.02/134,644.32 = 53,831.52/x
  3. Step 3: Cross multiply
    89,989.02x = 134,644.32 × 53,831.52
  4. Step 4: Simplify right side
    89,989.02x = 7,248,108,404.97
  5. Step 5: Solve for x
    x = 7,248,108,404.97/89,989.02
  6. Step 6: Final answer
    x = 80,544.36

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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.