Home / 48,480.38-72,721.82-13,420.34

Finding the Fourth Proportional to 48,480.38, 72,721.82 and 13,420.34

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Solution

The fourth proportional to 48,480.38, 72,721.82 and 13,420.34 is: 20,130.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,480.38 : 72,721.82 = 13,420.34 : x
  2. Step 2: Convert to fraction form
    48,480.38/72,721.82 = 13,420.34/x
  3. Step 3: Cross multiply
    48,480.38x = 72,721.82 × 13,420.34
  4. Step 4: Simplify right side
    48,480.38x = 975,951,549.82
  5. Step 5: Solve for x
    x = 975,951,549.82/48,480.38
  6. Step 6: Final answer
    x = 20,130.86

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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.