Home / 81,717.75-112,764.45-45,913.74

Finding the Fourth Proportional to 81,717.75, 112,764.45 and 45,913.74

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Solution

The fourth proportional to 81,717.75, 112,764.45 and 45,913.74 is: 63,357.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,717.75 : 112,764.45 = 45,913.74 : x
  2. Step 2: Convert to fraction form
    81,717.75/112,764.45 = 45,913.74/x
  3. Step 3: Cross multiply
    81,717.75x = 112,764.45 × 45,913.74
  4. Step 4: Simplify right side
    81,717.75x = 5,177,437,638.54
  5. Step 5: Solve for x
    x = 5,177,437,638.54/81,717.75
  6. Step 6: Final answer
    x = 63,357.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.