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Finding the Fourth Proportional to 72,754.76, 100,402.40 and 40,923.38

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Solution

The fourth proportional to 72,754.76, 100,402.40 and 40,923.38 is: 56,474.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,754.76 : 100,402.40 = 40,923.38 : x
  2. Step 2: Convert to fraction form
    72,754.76/100,402.40 = 40,923.38/x
  3. Step 3: Cross multiply
    72,754.76x = 100,402.40 × 40,923.38
  4. Step 4: Simplify right side
    72,754.76x = 4,108,805,921.43
  5. Step 5: Solve for x
    x = 4,108,805,921.43/72,754.76
  6. Step 6: Final answer
    x = 56,474.73

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1.5x scale

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.