Home / 81,500.75-112,471.44-47,532.80

Finding the Fourth Proportional to 81,500.75, 112,471.44 and 47,532.80

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Solution

The fourth proportional to 81,500.75, 112,471.44 and 47,532.80 is: 65,595.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,500.75 : 112,471.44 = 47,532.80 : x
  2. Step 2: Convert to fraction form
    81,500.75/112,471.44 = 47,532.80/x
  3. Step 3: Cross multiply
    81,500.75x = 112,471.44 × 47,532.80
  4. Step 4: Simplify right side
    81,500.75x = 5,346,081,900.87
  5. Step 5: Solve for x
    x = 5,346,081,900.87/81,500.75
  6. Step 6: Final answer
    x = 65,595.49

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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.