Home / 84,284.55-126,384.49-28,104.77

Finding the Fourth Proportional to 84,284.55, 126,384.49 and 28,104.77

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Solution

The fourth proportional to 84,284.55, 126,384.49 and 28,104.77 is: 42,143.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,284.55 : 126,384.49 = 28,104.77 : x
  2. Step 2: Convert to fraction form
    84,284.55/126,384.49 = 28,104.77/x
  3. Step 3: Cross multiply
    84,284.55x = 126,384.49 × 28,104.77
  4. Step 4: Simplify right side
    84,284.55x = 3,552,007,023.02
  5. Step 5: Solve for x
    x = 3,552,007,023.02/84,284.55
  6. Step 6: Final answer
    x = 42,143.04

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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.