Home / 84,282.55-126,381.50-28,102.77

Finding the Fourth Proportional to 84,282.55, 126,381.50 and 28,102.77

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Solution

The fourth proportional to 84,282.55, 126,381.50 and 28,102.77 is: 42,140.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,282.55 : 126,381.50 = 28,102.77 : x
  2. Step 2: Convert to fraction form
    84,282.55/126,381.50 = 28,102.77/x
  3. Step 3: Cross multiply
    84,282.55x = 126,381.50 × 28,102.77
  4. Step 4: Simplify right side
    84,282.55x = 3,551,669,770.29
  5. Step 5: Solve for x
    x = 3,551,669,770.29/84,282.55
  6. Step 6: Final answer
    x = 42,140.04

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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.