Home / 75,031.31-112,505.42-30,689.20

Finding the Fourth Proportional to 75,031.31, 112,505.42 and 30,689.20

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Solution

The fourth proportional to 75,031.31, 112,505.42 and 30,689.20 is: 46,016.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,031.31 : 112,505.42 = 30,689.20 : x
  2. Step 2: Convert to fraction form
    75,031.31/112,505.42 = 30,689.20/x
  3. Step 3: Cross multiply
    75,031.31x = 112,505.42 × 30,689.20
  4. Step 4: Simplify right side
    75,031.31x = 3,452,701,335.46
  5. Step 5: Solve for x
    x = 3,452,701,335.46/75,031.31
  6. Step 6: Final answer
    x = 46,016.81

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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.