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Finding the Fourth Proportional to 87,246.72, 130,908.96 and 45,684

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Solution

The fourth proportional to 87,246.72, 130,908.96 and 45,684 is: 68,546.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,246.72 : 130,908.96 = 45,684 : x
  2. Step 2: Convert to fraction form
    87,246.72/130,908.96 = 45,684/x
  3. Step 3: Cross multiply
    87,246.72x = 130,908.96 × 45,684
  4. Step 4: Simplify right side
    87,246.72x = 5,980,444,928.64
  5. Step 5: Solve for x
    x = 5,980,444,928.64/87,246.72
  6. Step 6: Final answer
    x = 68,546.36

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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.