Home / 83,415.06-125,123.40-21,085.56

Finding the Fourth Proportional to 83,415.06, 125,123.40 and 21,085.56

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Solution

The fourth proportional to 83,415.06, 125,123.40 and 21,085.56 is: 31,628.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,415.06 : 125,123.40 = 21,085.56 : x
  2. Step 2: Convert to fraction form
    83,415.06/125,123.40 = 21,085.56/x
  3. Step 3: Cross multiply
    83,415.06x = 125,123.40 × 21,085.56
  4. Step 4: Simplify right side
    83,415.06x = 2,638,296,958.10
  5. Step 5: Solve for x
    x = 2,638,296,958.10/83,415.06
  6. Step 6: Final answer
    x = 31,628.54

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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.