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Finding the Fourth Proportional to 74,400.56, 102,673.50 and 40,866.56

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Solution

The fourth proportional to 74,400.56, 102,673.50 and 40,866.56 is: 56,396.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,400.56 : 102,673.50 = 40,866.56 : x
  2. Step 2: Convert to fraction form
    74,400.56/102,673.50 = 40,866.56/x
  3. Step 3: Cross multiply
    74,400.56x = 102,673.50 × 40,866.56
  4. Step 4: Simplify right side
    74,400.56x = 4,195,912,748.16
  5. Step 5: Solve for x
    x = 4,195,912,748.16/74,400.56
  6. Step 6: Final answer
    x = 56,396.25

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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.