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Finding the Fourth Proportional to 48,443.48, 72,659.74 and 13,388.12

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Solution

The fourth proportional to 48,443.48, 72,659.74 and 13,388.12 is: 20,080.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,443.48 : 72,659.74 = 13,388.12 : x
  2. Step 2: Convert to fraction form
    48,443.48/72,659.74 = 13,388.12/x
  3. Step 3: Cross multiply
    48,443.48x = 72,659.74 × 13,388.12
  4. Step 4: Simplify right side
    48,443.48x = 972,777,318.29
  5. Step 5: Solve for x
    x = 972,777,318.29/48,443.48
  6. Step 6: Final answer
    x = 20,080.67

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1.5x scale

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.