Home / 87,143.81-130,703.36-27,971.69

Finding the Fourth Proportional to 87,143.81, 130,703.36 and 27,971.69

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Solution

The fourth proportional to 87,143.81, 130,703.36 and 27,971.69 is: 41,953.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,143.81 : 130,703.36 = 27,971.69 : x
  2. Step 2: Convert to fraction form
    87,143.81/130,703.36 = 27,971.69/x
  3. Step 3: Cross multiply
    87,143.81x = 130,703.36 × 27,971.69
  4. Step 4: Simplify right side
    87,143.81x = 3,655,993,074.50
  5. Step 5: Solve for x
    x = 3,655,993,074.50/87,143.81
  6. Step 6: Final answer
    x = 41,953.56

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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.