Home / 87,286.64-130,987.36-47,871.42

Finding the Fourth Proportional to 87,286.64, 130,987.36 and 47,871.42

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Solution

The fourth proportional to 87,286.64, 130,987.36 and 47,871.42 is: 71,838.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,286.64 : 130,987.36 = 47,871.42 : x
  2. Step 2: Convert to fraction form
    87,286.64/130,987.36 = 47,871.42/x
  3. Step 3: Cross multiply
    87,286.64x = 130,987.36 × 47,871.42
  4. Step 4: Simplify right side
    87,286.64x = 6,270,550,925.25
  5. Step 5: Solve for x
    x = 6,270,550,925.25/87,286.64
  6. Step 6: Final answer
    x = 71,838.61

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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.