Home / 84,605.10-126,818.34-28,391.91

Finding the Fourth Proportional to 84,605.10, 126,818.34 and 28,391.91

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Solution

The fourth proportional to 84,605.10, 126,818.34 and 28,391.91 is: 42,557.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,605.10 : 126,818.34 = 28,391.91 : x
  2. Step 2: Convert to fraction form
    84,605.10/126,818.34 = 28,391.91/x
  3. Step 3: Cross multiply
    84,605.10x = 126,818.34 × 28,391.91
  4. Step 4: Simplify right side
    84,605.10x = 3,600,614,895.63
  5. Step 5: Solve for x
    x = 3,600,614,895.63/84,605.10
  6. Step 6: Final answer
    x = 42,557.89

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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.