Home / 71,943.76-99,285.24-40,118.32

Finding the Fourth Proportional to 71,943.76, 99,285.24 and 40,118.32

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Solution

The fourth proportional to 71,943.76, 99,285.24 and 40,118.32 is: 55,364.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,943.76 : 99,285.24 = 40,118.32 : x
  2. Step 2: Convert to fraction form
    71,943.76/99,285.24 = 40,118.32/x
  3. Step 3: Cross multiply
    71,943.76x = 99,285.24 × 40,118.32
  4. Step 4: Simplify right side
    71,943.76x = 3,983,157,029.60
  5. Step 5: Solve for x
    x = 3,983,157,029.60/71,943.76
  6. Step 6: Final answer
    x = 55,364.87

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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.