Home / 87,257.70-130,898.93-28,079.60

Finding the Fourth Proportional to 87,257.70, 130,898.93 and 28,079.60

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Solution

The fourth proportional to 87,257.70, 130,898.93 and 28,079.60 is: 42,123.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,257.70 : 130,898.93 = 28,079.60 : x
  2. Step 2: Convert to fraction form
    87,257.70/130,898.93 = 28,079.60/x
  3. Step 3: Cross multiply
    87,257.70x = 130,898.93 × 28,079.60
  4. Step 4: Simplify right side
    87,257.70x = 3,675,588,799.94
  5. Step 5: Solve for x
    x = 3,675,588,799.94/87,257.70
  6. Step 6: Final answer
    x = 42,123.37

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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.