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Finding the Fourth Proportional to 74,541.78, 102,866.13 and 40,550.94

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Solution

The fourth proportional to 74,541.78, 102,866.13 and 40,550.94 is: 55,959.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,541.78 : 102,866.13 = 40,550.94 : x
  2. Step 2: Convert to fraction form
    74,541.78/102,866.13 = 40,550.94/x
  3. Step 3: Cross multiply
    74,541.78x = 102,866.13 × 40,550.94
  4. Step 4: Simplify right side
    74,541.78x = 4,171,318,265.66
  5. Step 5: Solve for x
    x = 4,171,318,265.66/74,541.78
  6. Step 6: Final answer
    x = 55,959.47

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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.