Home / 75,031.32-112,505.42-30,689.21

Finding the Fourth Proportional to 75,031.32, 112,505.42 and 30,689.21

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Solution

The fourth proportional to 75,031.32, 112,505.42 and 30,689.21 is: 46,016.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,031.32 : 112,505.42 = 30,689.21 : x
  2. Step 2: Convert to fraction form
    75,031.32/112,505.42 = 30,689.21/x
  3. Step 3: Cross multiply
    75,031.32x = 112,505.42 × 30,689.21
  4. Step 4: Simplify right side
    75,031.32x = 3,452,701,744.55
  5. Step 5: Solve for x
    x = 3,452,701,744.55/75,031.32
  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.