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Finding the Fourth Proportional to 74,000.20, 111,000.30 and 50,499.40

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Solution

The fourth proportional to 74,000.20, 111,000.30 and 50,499.40 is: 75,749.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,000.20 : 111,000.30 = 50,499.40 : x
  2. Step 2: Convert to fraction form
    74,000.20/111,000.30 = 50,499.40/x
  3. Step 3: Cross multiply
    74,000.20x = 111,000.30 × 50,499.40
  4. Step 4: Simplify right side
    74,000.20x = 5,605,448,549.82
  5. Step 5: Solve for x
    x = 5,605,448,549.82/74,000.20
  6. Step 6: Final answer
    x = 75,749.10

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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.