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Finding the Fourth Proportional to 71,207.69, 98,262.51 and 39,374.51

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Solution

The fourth proportional to 71,207.69, 98,262.51 and 39,374.51 is: 54,334.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,207.69 : 98,262.51 = 39,374.51 : x
  2. Step 2: Convert to fraction form
    71,207.69/98,262.51 = 39,374.51/x
  3. Step 3: Cross multiply
    71,207.69x = 98,262.51 × 39,374.51
  4. Step 4: Simplify right side
    71,207.69x = 3,869,038,182.62
  5. Step 5: Solve for x
    x = 3,869,038,182.62/71,207.69
  6. Step 6: Final answer
    x = 54,334.56

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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.