Home / 81,328.50-112,226.85-45,516.78

Finding the Fourth Proportional to 81,328.50, 112,226.85 and 45,516.78

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Solution

The fourth proportional to 81,328.50, 112,226.85 and 45,516.78 is: 62,809.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,328.50 : 112,226.85 = 45,516.78 : x
  2. Step 2: Convert to fraction form
    81,328.50/112,226.85 = 45,516.78/x
  3. Step 3: Cross multiply
    81,328.50x = 112,226.85 × 45,516.78
  4. Step 4: Simplify right side
    81,328.50x = 5,108,204,841.54
  5. Step 5: Solve for x
    x = 5,108,204,841.54/81,328.50
  6. Step 6: Final answer
    x = 62,809.53

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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.