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Finding the Fourth Proportional to 71,973.81, 99,272.40 and 62,396.57

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Solution

The fourth proportional to 71,973.81, 99,272.40 and 62,396.57 is: 86,062.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,973.81 : 99,272.40 = 62,396.57 : x
  2. Step 2: Convert to fraction form
    71,973.81/99,272.40 = 62,396.57/x
  3. Step 3: Cross multiply
    71,973.81x = 99,272.40 × 62,396.57
  4. Step 4: Simplify right side
    71,973.81x = 6,194,256,759.31
  5. Step 5: Solve for x
    x = 6,194,256,759.31/71,973.81
  6. Step 6: Final answer
    x = 86,062.65

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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.