Home / 84,281.40-126,438.53-25,115.76

Finding the Fourth Proportional to 84,281.40, 126,438.53 and 25,115.76

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Solution

The fourth proportional to 84,281.40, 126,438.53 and 25,115.76 is: 37,678.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,281.40 : 126,438.53 = 25,115.76 : x
  2. Step 2: Convert to fraction form
    84,281.40/126,438.53 = 25,115.76/x
  3. Step 3: Cross multiply
    84,281.40x = 126,438.53 × 25,115.76
  4. Step 4: Simplify right side
    84,281.40x = 3,175,599,648.65
  5. Step 5: Solve for x
    x = 3,175,599,648.65/84,281.40
  6. Step 6: Final answer
    x = 37,678.53

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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.