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Finding the Fourth Proportional to 74,352.92, 102,604.74 and 40,359.80

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Solution

The fourth proportional to 74,352.92, 102,604.74 and 40,359.80 is: 55,695.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,352.92 : 102,604.74 = 40,359.80 : x
  2. Step 2: Convert to fraction form
    74,352.92/102,604.74 = 40,359.80/x
  3. Step 3: Cross multiply
    74,352.92x = 102,604.74 × 40,359.80
  4. Step 4: Simplify right side
    74,352.92x = 4,141,106,785.45
  5. Step 5: Solve for x
    x = 4,141,106,785.45/74,352.92
  6. Step 6: Final answer
    x = 55,695.28

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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.