Home / 74,210.40-111,242.70-66,337.20

Finding the Fourth Proportional to 74,210.40, 111,242.70 and 66,337.20

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Solution

The fourth proportional to 74,210.40, 111,242.70 and 66,337.20 is: 99,440.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,210.40 : 111,242.70 = 66,337.20 : x
  2. Step 2: Convert to fraction form
    74,210.40/111,242.70 = 66,337.20/x
  3. Step 3: Cross multiply
    74,210.40x = 111,242.70 × 66,337.20
  4. Step 4: Simplify right side
    74,210.40x = 7,379,529,238.44
  5. Step 5: Solve for x
    x = 7,379,529,238.44/74,210.40
  6. Step 6: Final answer
    x = 99,440.63

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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.