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Finding the Fourth Proportional to 74,247.40, 111,321.90 and 40,983.40

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Solution

The fourth proportional to 74,247.40, 111,321.90 and 40,983.40 is: 61,447.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,247.40 : 111,321.90 = 40,983.40 : x
  2. Step 2: Convert to fraction form
    74,247.40/111,321.90 = 40,983.40/x
  3. Step 3: Cross multiply
    74,247.40x = 111,321.90 × 40,983.40
  4. Step 4: Simplify right side
    74,247.40x = 4,562,349,956.46
  5. Step 5: Solve for x
    x = 4,562,349,956.46/74,247.40
  6. Step 6: Final answer
    x = 61,447.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.