Home / 87,971.73-131,955.75-21,412.23

Finding the Fourth Proportional to 87,971.73, 131,955.75 and 21,412.23

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Solution

The fourth proportional to 87,971.73, 131,955.75 and 21,412.23 is: 32,117.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,971.73 : 131,955.75 = 21,412.23 : x
  2. Step 2: Convert to fraction form
    87,971.73/131,955.75 = 21,412.23/x
  3. Step 3: Cross multiply
    87,971.73x = 131,955.75 × 21,412.23
  4. Step 4: Simplify right side
    87,971.73x = 2,825,466,868.82
  5. Step 5: Solve for x
    x = 2,825,466,868.82/87,971.73
  6. Step 6: Final answer
    x = 32,117.90

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1.5x scale

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.