Home / 91,172.53-136,772.43-31,997.80

Finding the Fourth Proportional to 91,172.53, 136,772.43 and 31,997.80

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Solution

The fourth proportional to 91,172.53, 136,772.43 and 31,997.80 is: 48,001.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,172.53 : 136,772.43 = 31,997.80 : x
  2. Step 2: Convert to fraction form
    91,172.53/136,772.43 = 31,997.80/x
  3. Step 3: Cross multiply
    91,172.53x = 136,772.43 × 31,997.80
  4. Step 4: Simplify right side
    91,172.53x = 4,376,416,860.65
  5. Step 5: Solve for x
    x = 4,376,416,860.65/91,172.53
  6. Step 6: Final answer
    x = 48,001.49

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1.5x scale

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.