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Finding the Fourth Proportional to 86,779.65, 119,754.33 and 49,053.90

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Solution

The fourth proportional to 86,779.65, 119,754.33 and 49,053.90 is: 67,693.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,779.65 : 119,754.33 = 49,053.90 : x
  2. Step 2: Convert to fraction form
    86,779.65/119,754.33 = 49,053.90/x
  3. Step 3: Cross multiply
    86,779.65x = 119,754.33 × 49,053.90
  4. Step 4: Simplify right side
    86,779.65x = 5,874,416,928.39
  5. Step 5: Solve for x
    x = 5,874,416,928.39/86,779.65
  6. Step 6: Final answer
    x = 67,693.48

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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.