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Finding the Fourth Proportional to 74,466.71, 102,764.75 and 40,475.28

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Solution

The fourth proportional to 74,466.71, 102,764.75 and 40,475.28 is: 55,856.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,466.71 : 102,764.75 = 40,475.28 : x
  2. Step 2: Convert to fraction form
    74,466.71/102,764.75 = 40,475.28/x
  3. Step 3: Cross multiply
    74,466.71x = 102,764.75 × 40,475.28
  4. Step 4: Simplify right side
    74,466.71x = 4,159,431,874.66
  5. Step 5: Solve for x
    x = 4,159,431,874.66/74,466.71
  6. Step 6: Final answer
    x = 55,856.26

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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.