Home / 80,937.18-121,409.40-30,348.18

Finding the Fourth Proportional to 80,937.18, 121,409.40 and 30,348.18

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Solution

The fourth proportional to 80,937.18, 121,409.40 and 30,348.18 is: 45,523.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,937.18 : 121,409.40 = 30,348.18 : x
  2. Step 2: Convert to fraction form
    80,937.18/121,409.40 = 30,348.18/x
  3. Step 3: Cross multiply
    80,937.18x = 121,409.40 × 30,348.18
  4. Step 4: Simplify right side
    80,937.18x = 3,684,554,324.89
  5. Step 5: Solve for x
    x = 3,684,554,324.89/80,937.18
  6. Step 6: Final answer
    x = 45,523.63

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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.