Home / 83,589.12-125,383.20-21,264.48

Finding the Fourth Proportional to 83,589.12, 125,383.20 and 21,264.48

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Solution

The fourth proportional to 83,589.12, 125,383.20 and 21,264.48 is: 31,896.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,589.12 : 125,383.20 = 21,264.48 : x
  2. Step 2: Convert to fraction form
    83,589.12/125,383.20 = 21,264.48/x
  3. Step 3: Cross multiply
    83,589.12x = 125,383.20 × 21,264.48
  4. Step 4: Simplify right side
    83,589.12x = 2,666,208,548.74
  5. Step 5: Solve for x
    x = 2,666,208,548.74/83,589.12
  6. Step 6: Final answer
    x = 31,896.60

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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.