Home / 84,114.64-126,135.06-31,487.22

Finding the Fourth Proportional to 84,114.64, 126,135.06 and 31,487.22

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Solution

The fourth proportional to 84,114.64, 126,135.06 and 31,487.22 is: 47,217.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,114.64 : 126,135.06 = 31,487.22 : x
  2. Step 2: Convert to fraction form
    84,114.64/126,135.06 = 31,487.22/x
  3. Step 3: Cross multiply
    84,114.64x = 126,135.06 × 31,487.22
  4. Step 4: Simplify right side
    84,114.64x = 3,971,642,620.61
  5. Step 5: Solve for x
    x = 3,971,642,620.61/84,114.64
  6. Step 6: Final answer
    x = 47,217.02

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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.