Home / 87,155.37-130,689.87-30,987.06

Finding the Fourth Proportional to 87,155.37, 130,689.87 and 30,987.06

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Solution

The fourth proportional to 87,155.37, 130,689.87 and 30,987.06 is: 46,465.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,155.37 : 130,689.87 = 30,987.06 : x
  2. Step 2: Convert to fraction form
    87,155.37/130,689.87 = 30,987.06/x
  3. Step 3: Cross multiply
    87,155.37x = 130,689.87 × 30,987.06
  4. Step 4: Simplify right side
    87,155.37x = 4,049,694,843.08
  5. Step 5: Solve for x
    x = 4,049,694,843.08/87,155.37
  6. Step 6: Final answer
    x = 46,465.24

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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.