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Finding the Fourth Proportional to 48,355.93, 72,499.87 and 18,748.81

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Solution

The fourth proportional to 48,355.93, 72,499.87 and 18,748.81 is: 28,110.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,355.93 : 72,499.87 = 18,748.81 : x
  2. Step 2: Convert to fraction form
    48,355.93/72,499.87 = 18,748.81/x
  3. Step 3: Cross multiply
    48,355.93x = 72,499.87 × 18,748.81
  4. Step 4: Simplify right side
    48,355.93x = 1,359,286,287.65
  5. Step 5: Solve for x
    x = 1,359,286,287.65/48,355.93
  6. Step 6: Final answer
    x = 28,110.02

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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.