Home / 66,135.62-99,207.18-21,160.93

Finding the Fourth Proportional to 66,135.62, 99,207.18 and 21,160.93

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Solution

The fourth proportional to 66,135.62, 99,207.18 and 21,160.93 is: 31,742.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,135.62 : 99,207.18 = 21,160.93 : x
  2. Step 2: Convert to fraction form
    66,135.62/99,207.18 = 21,160.93/x
  3. Step 3: Cross multiply
    66,135.62x = 99,207.18 × 21,160.93
  4. Step 4: Simplify right side
    66,135.62x = 2,099,316,085.67
  5. Step 5: Solve for x
    x = 2,099,316,085.67/66,135.62
  6. Step 6: Final answer
    x = 31,742.59

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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.