Home / 66,138.74-99,207.14-16,219.21

Finding the Fourth Proportional to 66,138.74, 99,207.14 and 16,219.21

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Solution

The fourth proportional to 66,138.74, 99,207.14 and 16,219.21 is: 24,328.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,138.74 : 99,207.14 = 16,219.21 : x
  2. Step 2: Convert to fraction form
    66,138.74/99,207.14 = 16,219.21/x
  3. Step 3: Cross multiply
    66,138.74x = 99,207.14 × 16,219.21
  4. Step 4: Simplify right side
    66,138.74x = 1,609,061,437.16
  5. Step 5: Solve for x
    x = 1,609,061,437.16/66,138.74
  6. Step 6: Final answer
    x = 24,328.58

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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.