Home / 83,121.14-114,707.30-47,311.15

Finding the Fourth Proportional to 83,121.14, 114,707.30 and 47,311.15

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Solution

The fourth proportional to 83,121.14, 114,707.30 and 47,311.15 is: 65,289.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,121.14 : 114,707.30 = 47,311.15 : x
  2. Step 2: Convert to fraction form
    83,121.14/114,707.30 = 47,311.15/x
  3. Step 3: Cross multiply
    83,121.14x = 114,707.30 × 47,311.15
  4. Step 4: Simplify right side
    83,121.14x = 5,426,934,145.56
  5. Step 5: Solve for x
    x = 5,426,934,145.56/83,121.14
  6. Step 6: Final answer
    x = 65,289.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.