Home / 87,110.45-130,634.30-30,168.93

Finding the Fourth Proportional to 87,110.45, 130,634.30 and 30,168.93

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Solution

The fourth proportional to 87,110.45, 130,634.30 and 30,168.93 is: 45,242.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,110.45 : 130,634.30 = 30,168.93 : x
  2. Step 2: Convert to fraction form
    87,110.45/130,634.30 = 30,168.93/x
  3. Step 3: Cross multiply
    87,110.45x = 130,634.30 × 30,168.93
  4. Step 4: Simplify right side
    87,110.45x = 3,941,097,127.72
  5. Step 5: Solve for x
    x = 3,941,097,127.72/87,110.45
  6. Step 6: Final answer
    x = 45,242.53

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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.