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Finding the Fourth Proportional to 74,898.74, 103,357.92 and 40,906.69

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Solution

The fourth proportional to 74,898.74, 103,357.92 and 40,906.69 is: 56,449.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,898.74 : 103,357.92 = 40,906.69 : x
  2. Step 2: Convert to fraction form
    74,898.74/103,357.92 = 40,906.69/x
  3. Step 3: Cross multiply
    74,898.74x = 103,357.92 × 40,906.69
  4. Step 4: Simplify right side
    74,898.74x = 4,228,030,287.49
  5. Step 5: Solve for x
    x = 4,228,030,287.49/74,898.74
  6. Step 6: Final answer
    x = 56,449.95

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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.