Home / 84,078.85-126,127.16-34,151.46

Finding the Fourth Proportional to 84,078.85, 126,127.16 and 34,151.46

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Solution

The fourth proportional to 84,078.85, 126,127.16 and 34,151.46 is: 51,230.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,078.85 : 126,127.16 = 34,151.46 : x
  2. Step 2: Convert to fraction form
    84,078.85/126,127.16 = 34,151.46/x
  3. Step 3: Cross multiply
    84,078.85x = 126,127.16 × 34,151.46
  4. Step 4: Simplify right side
    84,078.85x = 4,307,426,659.65
  5. Step 5: Solve for x
    x = 4,307,426,659.65/84,078.85
  6. Step 6: Final answer
    x = 51,230.80

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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.