Home / 78,887.43-108,859.14-43,076.79

Finding the Fourth Proportional to 78,887.43, 108,859.14 and 43,076.79

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Solution

The fourth proportional to 78,887.43, 108,859.14 and 43,076.79 is: 59,442.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,887.43 : 108,859.14 = 43,076.79 : x
  2. Step 2: Convert to fraction form
    78,887.43/108,859.14 = 43,076.79/x
  3. Step 3: Cross multiply
    78,887.43x = 108,859.14 × 43,076.79
  4. Step 4: Simplify right side
    78,887.43x = 4,689,302,313.36
  5. Step 5: Solve for x
    x = 4,689,302,313.36/78,887.43
  6. Step 6: Final answer
    x = 59,442.96

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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.