Home / 87,067.80-130,426.70-45,427.32

Finding the Fourth Proportional to 87,067.80, 130,426.70 and 45,427.32

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Solution

The fourth proportional to 87,067.80, 130,426.70 and 45,427.32 is: 68,049.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,067.80 : 130,426.70 = 45,427.32 : x
  2. Step 2: Convert to fraction form
    87,067.80/130,426.70 = 45,427.32/x
  3. Step 3: Cross multiply
    87,067.80x = 130,426.70 × 45,427.32
  4. Step 4: Simplify right side
    87,067.80x = 5,924,935,210.31
  5. Step 5: Solve for x
    x = 5,924,935,210.31/87,067.80
  6. Step 6: Final answer
    x = 68,049.67

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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.