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Finding the Fourth Proportional to 68,007.40, 93,823.32 and 39,321.80

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Solution

The fourth proportional to 68,007.40, 93,823.32 and 39,321.80 is: 54,248.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,007.40 : 93,823.32 = 39,321.80 : x
  2. Step 2: Convert to fraction form
    68,007.40/93,823.32 = 39,321.80/x
  3. Step 3: Cross multiply
    68,007.40x = 93,823.32 × 39,321.80
  4. Step 4: Simplify right side
    68,007.40x = 3,689,301,824.38
  5. Step 5: Solve for x
    x = 3,689,301,824.38/68,007.40
  6. Step 6: Final answer
    x = 54,248.54

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1.5x scale

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.