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Finding the Fourth Proportional to 72,755.29, 100,401.25 and 40,924.18

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Solution

The fourth proportional to 72,755.29, 100,401.25 and 40,924.18 is: 56,474.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,755.29 : 100,401.25 = 40,924.18 : x
  2. Step 2: Convert to fraction form
    72,755.29/100,401.25 = 40,924.18/x
  3. Step 3: Cross multiply
    72,755.29x = 100,401.25 × 40,924.18
  4. Step 4: Simplify right side
    72,755.29x = 4,108,838,827.23
  5. Step 5: Solve for x
    x = 4,108,838,827.23/72,755.29
  6. Step 6: Final answer
    x = 56,474.78

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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.