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Finding the Fourth Proportional to 74,349.36, 102,600.84 and 40,815.12

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Solution

The fourth proportional to 74,349.36, 102,600.84 and 40,815.12 is: 56,324.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,349.36 : 102,600.84 = 40,815.12 : x
  2. Step 2: Convert to fraction form
    74,349.36/102,600.84 = 40,815.12/x
  3. Step 3: Cross multiply
    74,349.36x = 102,600.84 × 40,815.12
  4. Step 4: Simplify right side
    74,349.36x = 4,187,665,596.70
  5. Step 5: Solve for x
    x = 4,187,665,596.70/74,349.36
  6. Step 6: Final answer
    x = 56,324.16

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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.