Home / 72,402.28-99,914.85-40,571.17

Finding the Fourth Proportional to 72,402.28, 99,914.85 and 40,571.17

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Solution

The fourth proportional to 72,402.28, 99,914.85 and 40,571.17 is: 55,988.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,402.28 : 99,914.85 = 40,571.17 : x
  2. Step 2: Convert to fraction form
    72,402.28/99,914.85 = 40,571.17/x
  3. Step 3: Cross multiply
    72,402.28x = 99,914.85 × 40,571.17
  4. Step 4: Simplify right side
    72,402.28x = 4,053,662,115.09
  5. Step 5: Solve for x
    x = 4,053,662,115.09/72,402.28
  6. Step 6: Final answer
    x = 55,988.05

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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.