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Finding the Fourth Proportional to 72,754.29, 100,399.88 and 40,923.18

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Solution

The fourth proportional to 72,754.29, 100,399.88 and 40,923.18 is: 56,473.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,754.29 : 100,399.88 = 40,923.18 : x
  2. Step 2: Convert to fraction form
    72,754.29/100,399.88 = 40,923.18/x
  3. Step 3: Cross multiply
    72,754.29x = 100,399.88 × 40,923.18
  4. Step 4: Simplify right side
    72,754.29x = 4,108,682,156.60
  5. Step 5: Solve for x
    x = 4,108,682,156.60/72,754.29
  6. Step 6: Final answer
    x = 56,473.40

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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.