Home / 48,481.13-72,721.60-13,420.69

Finding the Fourth Proportional to 48,481.13, 72,721.60 and 13,420.69

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Solution

The fourth proportional to 48,481.13, 72,721.60 and 13,420.69 is: 20,131.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,481.13 : 72,721.60 = 13,420.69 : x
  2. Step 2: Convert to fraction form
    48,481.13/72,721.60 = 13,420.69/x
  3. Step 3: Cross multiply
    48,481.13x = 72,721.60 × 13,420.69
  4. Step 4: Simplify right side
    48,481.13x = 975,973,834.55
  5. Step 5: Solve for x
    x = 975,973,834.55/48,481.13
  6. Step 6: Final answer
    x = 20,131.00

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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.