Home / 90,792.72-136,192.74-31,634.40

Finding the Fourth Proportional to 90,792.72, 136,192.74 and 31,634.40

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Solution

The fourth proportional to 90,792.72, 136,192.74 and 31,634.40 is: 47,452.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,792.72 : 136,192.74 = 31,634.40 : x
  2. Step 2: Convert to fraction form
    90,792.72/136,192.74 = 31,634.40/x
  3. Step 3: Cross multiply
    90,792.72x = 136,192.74 × 31,634.40
  4. Step 4: Simplify right side
    90,792.72x = 4,308,375,614.26
  5. Step 5: Solve for x
    x = 4,308,375,614.26/90,792.72
  6. Step 6: Final answer
    x = 47,452.88

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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.