Home / 81,311.40-112,205.70-45,501.48

Finding the Fourth Proportional to 81,311.40, 112,205.70 and 45,501.48

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Solution

The fourth proportional to 81,311.40, 112,205.70 and 45,501.48 is: 62,789.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,311.40 : 112,205.70 = 45,501.48 : x
  2. Step 2: Convert to fraction form
    81,311.40/112,205.70 = 45,501.48/x
  3. Step 3: Cross multiply
    81,311.40x = 112,205.70 × 45,501.48
  4. Step 4: Simplify right side
    81,311.40x = 5,105,525,414.44
  5. Step 5: Solve for x
    x = 5,105,525,414.44/81,311.40
  6. Step 6: Final answer
    x = 62,789.79

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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.