Home / 87,345.35-130,985.79-31,170.43

Finding the Fourth Proportional to 87,345.35, 130,985.79 and 31,170.43

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Solution

The fourth proportional to 87,345.35, 130,985.79 and 31,170.43 is: 46,744.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,345.35 : 130,985.79 = 31,170.43 : x
  2. Step 2: Convert to fraction form
    87,345.35/130,985.79 = 31,170.43/x
  3. Step 3: Cross multiply
    87,345.35x = 130,985.79 × 31,170.43
  4. Step 4: Simplify right side
    87,345.35x = 4,082,882,914.87
  5. Step 5: Solve for x
    x = 4,082,882,914.87/87,345.35
  6. Step 6: Final answer
    x = 46,744.14

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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.