Home / 71,869.71-99,180.18-40,040.64

Finding the Fourth Proportional to 71,869.71, 99,180.18 and 40,040.64

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Solution

The fourth proportional to 71,869.71, 99,180.18 and 40,040.64 is: 55,256.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,869.71 : 99,180.18 = 40,040.64 : x
  2. Step 2: Convert to fraction form
    71,869.71/99,180.18 = 40,040.64/x
  3. Step 3: Cross multiply
    71,869.71x = 99,180.18 × 40,040.64
  4. Step 4: Simplify right side
    71,869.71x = 3,971,237,882.52
  5. Step 5: Solve for x
    x = 3,971,237,882.52/71,869.71
  6. Step 6: Final answer
    x = 55,256.07

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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.