Home / 84,352.12-126,543.56-28,186.88

Finding the Fourth Proportional to 84,352.12, 126,543.56 and 28,186.88

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Solution

The fourth proportional to 84,352.12, 126,543.56 and 28,186.88 is: 42,285.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,352.12 : 126,543.56 = 28,186.88 : x
  2. Step 2: Convert to fraction form
    84,352.12/126,543.56 = 28,186.88/x
  3. Step 3: Cross multiply
    84,352.12x = 126,543.56 × 28,186.88
  4. Step 4: Simplify right side
    84,352.12x = 3,566,868,140.49
  5. Step 5: Solve for x
    x = 3,566,868,140.49/84,352.12
  6. Step 6: Final answer
    x = 42,285.46

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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.