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Finding the Fourth Proportional to 73,865.50, 101,935.20 and 40,331.50

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Solution

The fourth proportional to 73,865.50, 101,935.20 and 40,331.50 is: 55,657.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,865.50 : 101,935.20 = 40,331.50 : x
  2. Step 2: Convert to fraction form
    73,865.50/101,935.20 = 40,331.50/x
  3. Step 3: Cross multiply
    73,865.50x = 101,935.20 × 40,331.50
  4. Step 4: Simplify right side
    73,865.50x = 4,111,199,518.80
  5. Step 5: Solve for x
    x = 4,111,199,518.80/73,865.50
  6. Step 6: Final answer
    x = 55,657.91

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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.