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Finding the Fourth Proportional to 48,420.68, 72,629.04 and 13,359.44

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Solution

The fourth proportional to 48,420.68, 72,629.04 and 13,359.44 is: 20,038.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,420.68 : 72,629.04 = 13,359.44 : x
  2. Step 2: Convert to fraction form
    48,420.68/72,629.04 = 13,359.44/x
  3. Step 3: Cross multiply
    48,420.68x = 72,629.04 × 13,359.44
  4. Step 4: Simplify right side
    48,420.68x = 970,283,302.14
  5. Step 5: Solve for x
    x = 970,283,302.14/48,420.68
  6. Step 6: Final answer
    x = 20,038.61

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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.