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Finding the Fourth Proportional to 74,333.85, 102,578.94 and 40,340.88

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Solution

The fourth proportional to 74,333.85, 102,578.94 and 40,340.88 is: 55,669.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,333.85 : 102,578.94 = 40,340.88 : x
  2. Step 2: Convert to fraction form
    74,333.85/102,578.94 = 40,340.88/x
  3. Step 3: Cross multiply
    74,333.85x = 102,578.94 × 40,340.88
  4. Step 4: Simplify right side
    74,333.85x = 4,138,124,709.07
  5. Step 5: Solve for x
    x = 4,138,124,709.07/74,333.85
  6. Step 6: Final answer
    x = 55,669.45

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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.