Home / 48,128.76-72,170.31-28,144.05

Finding the Fourth Proportional to 48,128.76, 72,170.31 and 28,144.05

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Solution

The fourth proportional to 48,128.76, 72,170.31 and 28,144.05 is: 42,202.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,128.76 : 72,170.31 = 28,144.05 : x
  2. Step 2: Convert to fraction form
    48,128.76/72,170.31 = 28,144.05/x
  3. Step 3: Cross multiply
    48,128.76x = 72,170.31 × 28,144.05
  4. Step 4: Simplify right side
    48,128.76x = 2,031,164,813.16
  5. Step 5: Solve for x
    x = 2,031,164,813.16/48,128.76
  6. Step 6: Final answer
    x = 42,202.72

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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.