Home / 71,920.50-99,257.70-43,249.56

Finding the Fourth Proportional to 71,920.50, 99,257.70 and 43,249.56

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Solution

The fourth proportional to 71,920.50, 99,257.70 and 43,249.56 is: 59,688.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,920.50 : 99,257.70 = 43,249.56 : x
  2. Step 2: Convert to fraction form
    71,920.50/99,257.70 = 43,249.56/x
  3. Step 3: Cross multiply
    71,920.50x = 99,257.70 × 43,249.56
  4. Step 4: Simplify right side
    71,920.50x = 4,292,851,851.61
  5. Step 5: Solve for x
    x = 4,292,851,851.61/71,920.50
  6. Step 6: Final answer
    x = 59,688.85

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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.