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Finding the Fourth Proportional to 67,887.48, 101,790.28 and 30,440.76

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Solution

The fourth proportional to 67,887.48, 101,790.28 and 30,440.76 is: 45,642.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,887.48 : 101,790.28 = 30,440.76 : x
  2. Step 2: Convert to fraction form
    67,887.48/101,790.28 = 30,440.76/x
  3. Step 3: Cross multiply
    67,887.48x = 101,790.28 × 30,440.76
  4. Step 4: Simplify right side
    67,887.48x = 3,098,573,483.81
  5. Step 5: Solve for x
    x = 3,098,573,483.81/67,887.48
  6. Step 6: Final answer
    x = 45,642.78

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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.