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Finding the Fourth Proportional to 74,499.70, 102,809.56 and 40,965.70

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Solution

The fourth proportional to 74,499.70, 102,809.56 and 40,965.70 is: 56,532.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,499.70 : 102,809.56 = 40,965.70 : x
  2. Step 2: Convert to fraction form
    74,499.70/102,809.56 = 40,965.70/x
  3. Step 3: Cross multiply
    74,499.70x = 102,809.56 × 40,965.70
  4. Step 4: Simplify right side
    74,499.70x = 4,211,665,592.09
  5. Step 5: Solve for x
    x = 4,211,665,592.09/74,499.70
  6. Step 6: Final answer
    x = 56,532.65

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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.