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Finding the Fourth Proportional to 73,780.50, 101,817.09 and 40,246.50

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Solution

The fourth proportional to 73,780.50, 101,817.09 and 40,246.50 is: 55,540.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,780.50 : 101,817.09 = 40,246.50 : x
  2. Step 2: Convert to fraction form
    73,780.50/101,817.09 = 40,246.50/x
  3. Step 3: Cross multiply
    73,780.50x = 101,817.09 × 40,246.50
  4. Step 4: Simplify right side
    73,780.50x = 4,097,781,512.69
  5. Step 5: Solve for x
    x = 4,097,781,512.69/73,780.50
  6. Step 6: Final answer
    x = 55,540.17

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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.