Home / 81,325.57-112,229.26-45,515.58

Finding the Fourth Proportional to 81,325.57, 112,229.26 and 45,515.58

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Solution

The fourth proportional to 81,325.57, 112,229.26 and 45,515.58 is: 62,811.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,325.57 : 112,229.26 = 45,515.58 : x
  2. Step 2: Convert to fraction form
    81,325.57/112,229.26 = 45,515.58/x
  3. Step 3: Cross multiply
    81,325.57x = 112,229.26 × 45,515.58
  4. Step 4: Simplify right side
    81,325.57x = 5,108,179,861.87
  5. Step 5: Solve for x
    x = 5,108,179,861.87/81,325.57
  6. Step 6: Final answer
    x = 62,811.49

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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.