Home / 84,576.26-126,878.98-28,421.76

Finding the Fourth Proportional to 84,576.26, 126,878.98 and 28,421.76

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Solution

The fourth proportional to 84,576.26, 126,878.98 and 28,421.76 is: 42,637.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,576.26 : 126,878.98 = 28,421.76 : x
  2. Step 2: Convert to fraction form
    84,576.26/126,878.98 = 28,421.76/x
  3. Step 3: Cross multiply
    84,576.26x = 126,878.98 × 28,421.76
  4. Step 4: Simplify right side
    84,576.26x = 3,606,123,918.60
  5. Step 5: Solve for x
    x = 3,606,123,918.60/84,576.26
  6. Step 6: Final answer
    x = 42,637.54

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1.5x scale

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.