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Finding the Fourth Proportional to 73,925.19, 102,016.80 and 40,391.19

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Solution

The fourth proportional to 73,925.19, 102,016.80 and 40,391.19 is: 55,739.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,925.19 : 102,016.80 = 40,391.19 : x
  2. Step 2: Convert to fraction form
    73,925.19/102,016.80 = 40,391.19/x
  3. Step 3: Cross multiply
    73,925.19x = 102,016.80 × 40,391.19
  4. Step 4: Simplify right side
    73,925.19x = 4,120,579,951.99
  5. Step 5: Solve for x
    x = 4,120,579,951.99/73,925.19
  6. Step 6: Final answer
    x = 55,739.86

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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.