Home / 81,516.66-112,499.51-45,221.69

Finding the Fourth Proportional to 81,516.66, 112,499.51 and 45,221.69

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Solution

The fourth proportional to 81,516.66, 112,499.51 and 45,221.69 is: 62,409.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,516.66 : 112,499.51 = 45,221.69 : x
  2. Step 2: Convert to fraction form
    81,516.66/112,499.51 = 45,221.69/x
  3. Step 3: Cross multiply
    81,516.66x = 112,499.51 × 45,221.69
  4. Step 4: Simplify right side
    81,516.66x = 5,087,417,403.87
  5. Step 5: Solve for x
    x = 5,087,417,403.87/81,516.66
  6. Step 6: Final answer
    x = 62,409.54

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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.