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Finding the Fourth Proportional to 73,813.50, 101,862.72 and 40,279.50

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Solution

The fourth proportional to 73,813.50, 101,862.72 and 40,279.50 is: 55,585.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,813.50 : 101,862.72 = 40,279.50 : x
  2. Step 2: Convert to fraction form
    73,813.50/101,862.72 = 40,279.50/x
  3. Step 3: Cross multiply
    73,813.50x = 101,862.72 × 40,279.50
  4. Step 4: Simplify right side
    73,813.50x = 4,102,979,430.24
  5. Step 5: Solve for x
    x = 4,102,979,430.24/73,813.50
  6. Step 6: Final answer
    x = 55,585.76

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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.