Home / 71,938.94-99,260.64-40,107.15

Finding the Fourth Proportional to 71,938.94, 99,260.64 and 40,107.15

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Solution

The fourth proportional to 71,938.94, 99,260.64 and 40,107.15 is: 55,339.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,938.94 : 99,260.64 = 40,107.15 : x
  2. Step 2: Convert to fraction form
    71,938.94/99,260.64 = 40,107.15/x
  3. Step 3: Cross multiply
    71,938.94x = 99,260.64 × 40,107.15
  4. Step 4: Simplify right side
    71,938.94x = 3,981,061,377.58
  5. Step 5: Solve for x
    x = 3,981,061,377.58/71,938.94
  6. Step 6: Final answer
    x = 55,339.45

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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.