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Finding the Fourth Proportional to 74,442.48, 102,736.92 and 40,915.44

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Solution

The fourth proportional to 74,442.48, 102,736.92 and 40,915.44 is: 56,466.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,442.48 : 102,736.92 = 40,915.44 : x
  2. Step 2: Convert to fraction form
    74,442.48/102,736.92 = 40,915.44/x
  3. Step 3: Cross multiply
    74,442.48x = 102,736.92 × 40,915.44
  4. Step 4: Simplify right side
    74,442.48x = 4,203,526,286.04
  5. Step 5: Solve for x
    x = 4,203,526,286.04/74,442.48
  6. Step 6: Final answer
    x = 56,466.77

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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.