Home / 87,875.81-131,786.47-31,708.65

Finding the Fourth Proportional to 87,875.81, 131,786.47 and 31,708.65

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Solution

The fourth proportional to 87,875.81, 131,786.47 and 31,708.65 is: 47,553.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,875.81 : 131,786.47 = 31,708.65 : x
  2. Step 2: Convert to fraction form
    87,875.81/131,786.47 = 31,708.65/x
  3. Step 3: Cross multiply
    87,875.81x = 131,786.47 × 31,708.65
  4. Step 4: Simplify right side
    87,875.81x = 4,178,771,051.97
  5. Step 5: Solve for x
    x = 4,178,771,051.97/87,875.81
  6. Step 6: Final answer
    x = 47,553.14

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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.