Home / 66,297.49-99,431.04-18,911.68

Finding the Fourth Proportional to 66,297.49, 99,431.04 and 18,911.68

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Solution

The fourth proportional to 66,297.49, 99,431.04 and 18,911.68 is: 28,363.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,297.49 : 99,431.04 = 18,911.68 : x
  2. Step 2: Convert to fraction form
    66,297.49/99,431.04 = 18,911.68/x
  3. Step 3: Cross multiply
    66,297.49x = 99,431.04 × 18,911.68
  4. Step 4: Simplify right side
    66,297.49x = 1,880,408,010.55
  5. Step 5: Solve for x
    x = 1,880,408,010.55/66,297.49
  6. Step 6: Final answer
    x = 28,363.19

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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.