Home / 78,956.13-108,960.89-43,147.65

Finding the Fourth Proportional to 78,956.13, 108,960.89 and 43,147.65

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Solution

The fourth proportional to 78,956.13, 108,960.89 and 43,147.65 is: 59,544.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,956.13 : 108,960.89 = 43,147.65 : x
  2. Step 2: Convert to fraction form
    78,956.13/108,960.89 = 43,147.65/x
  3. Step 3: Cross multiply
    78,956.13x = 108,960.89 × 43,147.65
  4. Step 4: Simplify right side
    78,956.13x = 4,701,406,129.67
  5. Step 5: Solve for x
    x = 4,701,406,129.67/78,956.13
  6. Step 6: Final answer
    x = 59,544.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.