Home / 87,128.32-130,481.97-49,574.63

Finding the Fourth Proportional to 87,128.32, 130,481.97 and 49,574.63

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Solution

The fourth proportional to 87,128.32, 130,481.97 and 49,574.63 is: 74,242.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,128.32 : 130,481.97 = 49,574.63 : x
  2. Step 2: Convert to fraction form
    87,128.32/130,481.97 = 49,574.63/x
  3. Step 3: Cross multiply
    87,128.32x = 130,481.97 × 49,574.63
  4. Step 4: Simplify right side
    87,128.32x = 6,468,594,484.14
  5. Step 5: Solve for x
    x = 6,468,594,484.14/87,128.32
  6. Step 6: Final answer
    x = 74,242.16

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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.