Home / 71,486.13-98,662.70-39,665.28

Finding the Fourth Proportional to 71,486.13, 98,662.70 and 39,665.28

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Solution

The fourth proportional to 71,486.13, 98,662.70 and 39,665.28 is: 54,744.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,486.13 : 98,662.70 = 39,665.28 : x
  2. Step 2: Convert to fraction form
    71,486.13/98,662.70 = 39,665.28/x
  3. Step 3: Cross multiply
    71,486.13x = 98,662.70 × 39,665.28
  4. Step 4: Simplify right side
    71,486.13x = 3,913,483,422.73
  5. Step 5: Solve for x
    x = 3,913,483,422.73/71,486.13
  6. Step 6: Final answer
    x = 54,744.65

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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.