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Finding the Fourth Proportional to 71,975.59, 107,224.69 and 68,737.13

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Solution

The fourth proportional to 71,975.59, 107,224.69 and 68,737.13 is: 102,400.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,975.59 : 107,224.69 = 68,737.13 : x
  2. Step 2: Convert to fraction form
    71,975.59/107,224.69 = 68,737.13/x
  3. Step 3: Cross multiply
    71,975.59x = 107,224.69 × 68,737.13
  4. Step 4: Simplify right side
    71,975.59x = 7,370,317,386.99
  5. Step 5: Solve for x
    x = 7,370,317,386.99/71,975.59
  6. Step 6: Final answer
    x = 102,400.24

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.