Home / 71,719.74-98,976.75-39,887.96

Finding the Fourth Proportional to 71,719.74, 98,976.75 and 39,887.96

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Solution

The fourth proportional to 71,719.74, 98,976.75 and 39,887.96 is: 55,047.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,719.74 : 98,976.75 = 39,887.96 : x
  2. Step 2: Convert to fraction form
    71,719.74/98,976.75 = 39,887.96/x
  3. Step 3: Cross multiply
    71,719.74x = 98,976.75 × 39,887.96
  4. Step 4: Simplify right side
    71,719.74x = 3,947,980,644.93
  5. Step 5: Solve for x
    x = 3,947,980,644.93/71,719.74
  6. Step 6: Final answer
    x = 55,047.34

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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.