Home / 87,067.20-130,341.60-51,988.80

Finding the Fourth Proportional to 87,067.20, 130,341.60 and 51,988.80

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Solution

The fourth proportional to 87,067.20, 130,341.60 and 51,988.80 is: 77,828.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,067.20 : 130,341.60 = 51,988.80 : x
  2. Step 2: Convert to fraction form
    87,067.20/130,341.60 = 51,988.80/x
  3. Step 3: Cross multiply
    87,067.20x = 130,341.60 × 51,988.80
  4. Step 4: Simplify right side
    87,067.20x = 6,776,303,374.08
  5. Step 5: Solve for x
    x = 6,776,303,374.08/87,067.20
  6. Step 6: Final answer
    x = 77,828.43

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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.