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Finding the Fourth Proportional to 69,639, 96,102.95 and 39,423.54

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Solution

The fourth proportional to 69,639, 96,102.95 and 39,423.54 is: 54,405.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,639 : 96,102.95 = 39,423.54 : x
  2. Step 2: Convert to fraction form
    69,639/96,102.95 = 39,423.54/x
  3. Step 3: Cross multiply
    69,639x = 96,102.95 × 39,423.54
  4. Step 4: Simplify right side
    69,639x = 3,788,718,296.33
  5. Step 5: Solve for x
    x = 3,788,718,296.33/69,639
  6. Step 6: Final answer
    x = 54,405.12

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.