Home / 74,628.20-111,942.30-66,463.40

Finding the Fourth Proportional to 74,628.20, 111,942.30 and 66,463.40

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Solution

The fourth proportional to 74,628.20, 111,942.30 and 66,463.40 is: 99,695.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,628.20 : 111,942.30 = 66,463.40 : x
  2. Step 2: Convert to fraction form
    74,628.20/111,942.30 = 66,463.40/x
  3. Step 3: Cross multiply
    74,628.20x = 111,942.30 × 66,463.40
  4. Step 4: Simplify right side
    74,628.20x = 7,440,065,861.82
  5. Step 5: Solve for x
    x = 7,440,065,861.82/74,628.20
  6. Step 6: Final answer
    x = 99,695.10

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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.