Home / 105,691.05-145,850.49-57,942.77

Finding the Fourth Proportional to 105,691.05, 145,850.49 and 57,942.77

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Solution

The fourth proportional to 105,691.05, 145,850.49 and 57,942.77 is: 79,959.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,691.05 : 145,850.49 = 57,942.77 : x
  2. Step 2: Convert to fraction form
    105,691.05/145,850.49 = 57,942.77/x
  3. Step 3: Cross multiply
    105,691.05x = 145,850.49 × 57,942.77
  4. Step 4: Simplify right side
    105,691.05x = 8,450,980,667.20
  5. Step 5: Solve for x
    x = 8,450,980,667.20/105,691.05
  6. Step 6: Final answer
    x = 79,959.28

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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.