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Finding the Fourth Proportional to 73,663.40, 101,655.46 and 40,129.40

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Solution

The fourth proportional to 73,663.40, 101,655.46 and 40,129.40 is: 55,378.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,663.40 : 101,655.46 = 40,129.40 : x
  2. Step 2: Convert to fraction form
    73,663.40/101,655.46 = 40,129.40/x
  3. Step 3: Cross multiply
    73,663.40x = 101,655.46 × 40,129.40
  4. Step 4: Simplify right side
    73,663.40x = 4,079,372,616.52
  5. Step 5: Solve for x
    x = 4,079,372,616.52/73,663.40
  6. Step 6: Final answer
    x = 55,378.55

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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.