Home / 84,152.88-126,212.04-31,561.20

Finding the Fourth Proportional to 84,152.88, 126,212.04 and 31,561.20

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Solution

The fourth proportional to 84,152.88, 126,212.04 and 31,561.20 is: 47,335.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,152.88 : 126,212.04 = 31,561.20 : x
  2. Step 2: Convert to fraction form
    84,152.88/126,212.04 = 31,561.20/x
  3. Step 3: Cross multiply
    84,152.88x = 126,212.04 × 31,561.20
  4. Step 4: Simplify right side
    84,152.88x = 3,983,403,436.85
  5. Step 5: Solve for x
    x = 3,983,403,436.85/84,152.88
  6. Step 6: Final answer
    x = 47,335.32

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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.