Home / 87,099.30-130,667.40-27,976.50

Finding the Fourth Proportional to 87,099.30, 130,667.40 and 27,976.50

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Solution

The fourth proportional to 87,099.30, 130,667.40 and 27,976.50 is: 41,970.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,099.30 : 130,667.40 = 27,976.50 : x
  2. Step 2: Convert to fraction form
    87,099.30/130,667.40 = 27,976.50/x
  3. Step 3: Cross multiply
    87,099.30x = 130,667.40 × 27,976.50
  4. Step 4: Simplify right side
    87,099.30x = 3,655,616,516.10
  5. Step 5: Solve for x
    x = 3,655,616,516.10/87,099.30
  6. Step 6: Final answer
    x = 41,970.68

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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.