Home / 84,688.73-126,996.17-28,513.74

Finding the Fourth Proportional to 84,688.73, 126,996.17 and 28,513.74

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Solution

The fourth proportional to 84,688.73, 126,996.17 and 28,513.74 is: 42,758.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,688.73 : 126,996.17 = 28,513.74 : x
  2. Step 2: Convert to fraction form
    84,688.73/126,996.17 = 28,513.74/x
  3. Step 3: Cross multiply
    84,688.73x = 126,996.17 × 28,513.74
  4. Step 4: Simplify right side
    84,688.73x = 3,621,135,772.38
  5. Step 5: Solve for x
    x = 3,621,135,772.38/84,688.73
  6. Step 6: Final answer
    x = 42,758.18

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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.