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Finding the Fourth Proportional to 68,693.40, 103,040.10 and 61,804.35

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Solution

The fourth proportional to 68,693.40, 103,040.10 and 61,804.35 is: 92,706.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,693.40 : 103,040.10 = 61,804.35 : x
  2. Step 2: Convert to fraction form
    68,693.40/103,040.10 = 61,804.35/x
  3. Step 3: Cross multiply
    68,693.40x = 103,040.10 × 61,804.35
  4. Step 4: Simplify right side
    68,693.40x = 6,368,326,404.44
  5. Step 5: Solve for x
    x = 6,368,326,404.44/68,693.40
  6. Step 6: Final answer
    x = 92,706.53

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.