Home / 74,487.40-111,731.10-73,175.20

Finding the Fourth Proportional to 74,487.40, 111,731.10 and 73,175.20

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Solution

The fourth proportional to 74,487.40, 111,731.10 and 73,175.20 is: 109,762.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,487.40 : 111,731.10 = 73,175.20 : x
  2. Step 2: Convert to fraction form
    74,487.40/111,731.10 = 73,175.20/x
  3. Step 3: Cross multiply
    74,487.40x = 111,731.10 × 73,175.20
  4. Step 4: Simplify right side
    74,487.40x = 8,175,945,588.72
  5. Step 5: Solve for x
    x = 8,175,945,588.72/74,487.40
  6. Step 6: Final answer
    x = 109,762.80

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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.