Home / 84,436.11-126,669.60-28,270.71

Finding the Fourth Proportional to 84,436.11, 126,669.60 and 28,270.71

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Solution

The fourth proportional to 84,436.11, 126,669.60 and 28,270.71 is: 42,411.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,436.11 : 126,669.60 = 28,270.71 : x
  2. Step 2: Convert to fraction form
    84,436.11/126,669.60 = 28,270.71/x
  3. Step 3: Cross multiply
    84,436.11x = 126,669.60 × 28,270.71
  4. Step 4: Simplify right side
    84,436.11x = 3,581,039,527.42
  5. Step 5: Solve for x
    x = 3,581,039,527.42/84,436.11
  6. Step 6: Final answer
    x = 42,411.23

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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.