Home / 71,938.88-107,908.32-30,386.24

Finding the Fourth Proportional to 71,938.88, 107,908.32 and 30,386.24

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Solution

The fourth proportional to 71,938.88, 107,908.32 and 30,386.24 is: 45,579.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,938.88 : 107,908.32 = 30,386.24 : x
  2. Step 2: Convert to fraction form
    71,938.88/107,908.32 = 30,386.24/x
  3. Step 3: Cross multiply
    71,938.88x = 107,908.32 × 30,386.24
  4. Step 4: Simplify right side
    71,938.88x = 3,278,928,109.52
  5. Step 5: Solve for x
    x = 3,278,928,109.52/71,938.88
  6. Step 6: Final answer
    x = 45,579.36

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.