Home / 56,129.28-84,208.52-28,048.20

Finding the Fourth Proportional to 56,129.28, 84,208.52 and 28,048.20

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Solution

The fourth proportional to 56,129.28, 84,208.52 and 28,048.20 is: 42,079.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,129.28 : 84,208.52 = 28,048.20 : x
  2. Step 2: Convert to fraction form
    56,129.28/84,208.52 = 28,048.20/x
  3. Step 3: Cross multiply
    56,129.28x = 84,208.52 × 28,048.20
  4. Step 4: Simplify right side
    56,129.28x = 2,361,897,270.42
  5. Step 5: Solve for x
    x = 2,361,897,270.42/56,129.28
  6. Step 6: Final answer
    x = 42,079.59

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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.