Home / 80,031.02-120,013.32-30,085.34

Finding the Fourth Proportional to 80,031.02, 120,013.32 and 30,085.34

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Solution

The fourth proportional to 80,031.02, 120,013.32 and 30,085.34 is: 45,115.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,031.02 : 120,013.32 = 30,085.34 : x
  2. Step 2: Convert to fraction form
    80,031.02/120,013.32 = 30,085.34/x
  3. Step 3: Cross multiply
    80,031.02x = 120,013.32 × 30,085.34
  4. Step 4: Simplify right side
    80,031.02x = 3,610,641,536.73
  5. Step 5: Solve for x
    x = 3,610,641,536.73/80,031.02
  6. Step 6: Final answer
    x = 45,115.53

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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.