Home / 51,612.12-71,221.14-30,386.88

Finding the Fourth Proportional to 51,612.12, 71,221.14 and 30,386.88

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Solution

The fourth proportional to 51,612.12, 71,221.14 and 30,386.88 is: 41,931.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,612.12 : 71,221.14 = 30,386.88 : x
  2. Step 2: Convert to fraction form
    51,612.12/71,221.14 = 30,386.88/x
  3. Step 3: Cross multiply
    51,612.12x = 71,221.14 × 30,386.88
  4. Step 4: Simplify right side
    51,612.12x = 2,164,188,234.64
  5. Step 5: Solve for x
    x = 2,164,188,234.64/51,612.12
  6. Step 6: Final answer
    x = 41,931.78

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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.