Home / 81,789.57-112,868.95-45,491.35

Finding the Fourth Proportional to 81,789.57, 112,868.95 and 45,491.35

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Solution

The fourth proportional to 81,789.57, 112,868.95 and 45,491.35 is: 62,777.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,789.57 : 112,868.95 = 45,491.35 : x
  2. Step 2: Convert to fraction form
    81,789.57/112,868.95 = 45,491.35/x
  3. Step 3: Cross multiply
    81,789.57x = 112,868.95 × 45,491.35
  4. Step 4: Simplify right side
    81,789.57x = 5,134,560,908.58
  5. Step 5: Solve for x
    x = 5,134,560,908.58/81,789.57
  6. Step 6: Final answer
    x = 62,777.70

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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.