Home / 71,986.46-99,341.24-40,155.35

Finding the Fourth Proportional to 71,986.46, 99,341.24 and 40,155.35

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Solution

The fourth proportional to 71,986.46, 99,341.24 and 40,155.35 is: 55,414.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,986.46 : 99,341.24 = 40,155.35 : x
  2. Step 2: Convert to fraction form
    71,986.46/99,341.24 = 40,155.35/x
  3. Step 3: Cross multiply
    71,986.46x = 99,341.24 × 40,155.35
  4. Step 4: Simplify right side
    71,986.46x = 3,989,081,564.15
  5. Step 5: Solve for x
    x = 3,989,081,564.15/71,986.46
  6. Step 6: Final answer
    x = 55,414.34

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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.