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Finding the Fourth Proportional to 86,722.56, 119,675.61 and 48,479.76

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Solution

The fourth proportional to 86,722.56, 119,675.61 and 48,479.76 is: 66,901.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,722.56 : 119,675.61 = 48,479.76 : x
  2. Step 2: Convert to fraction form
    86,722.56/119,675.61 = 48,479.76/x
  3. Step 3: Cross multiply
    86,722.56x = 119,675.61 × 48,479.76
  4. Step 4: Simplify right side
    86,722.56x = 5,801,844,850.65
  5. Step 5: Solve for x
    x = 5,801,844,850.65/86,722.56
  6. Step 6: Final answer
    x = 66,901.22

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1.5x scale

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.