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Finding the Fourth Proportional to 87,316.32, 130,975.38 and 69,896.88

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Solution

The fourth proportional to 87,316.32, 130,975.38 and 69,896.88 is: 104,846.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,316.32 : 130,975.38 = 69,896.88 : x
  2. Step 2: Convert to fraction form
    87,316.32/130,975.38 = 69,896.88/x
  3. Step 3: Cross multiply
    87,316.32x = 130,975.38 × 69,896.88
  4. Step 4: Simplify right side
    87,316.32x = 9,154,770,418.81
  5. Step 5: Solve for x
    x = 9,154,770,418.81/87,316.32
  6. Step 6: Final answer
    x = 104,846.04

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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.