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Finding the Fourth Proportional to 67,877.96, 101,831.70 and 21,134.60

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Solution

The fourth proportional to 67,877.96, 101,831.70 and 21,134.60 is: 31,706.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,877.96 : 101,831.70 = 21,134.60 : x
  2. Step 2: Convert to fraction form
    67,877.96/101,831.70 = 21,134.60/x
  3. Step 3: Cross multiply
    67,877.96x = 101,831.70 × 21,134.60
  4. Step 4: Simplify right side
    67,877.96x = 2,152,172,246.82
  5. Step 5: Solve for x
    x = 2,152,172,246.82/67,877.96
  6. Step 6: Final answer
    x = 31,706.50

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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.