Home / 74,600.20-111,900.30-66,435.40

Finding the Fourth Proportional to 74,600.20, 111,900.30 and 66,435.40

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Solution

The fourth proportional to 74,600.20, 111,900.30 and 66,435.40 is: 99,653.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,600.20 : 111,900.30 = 66,435.40 : x
  2. Step 2: Convert to fraction form
    74,600.20/111,900.30 = 66,435.40/x
  3. Step 3: Cross multiply
    74,600.20x = 111,900.30 × 66,435.40
  4. Step 4: Simplify right side
    74,600.20x = 7,434,141,190.62
  5. Step 5: Solve for x
    x = 7,434,141,190.62/74,600.20
  6. Step 6: Final answer
    x = 99,653.10

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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.