Home / 66,136.24-91,218-45,983.04

Finding the Fourth Proportional to 66,136.24, 91,218 and 45,983.04

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Solution

The fourth proportional to 66,136.24, 91,218 and 45,983.04 is: 63,421.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,136.24 : 91,218 = 45,983.04 : x
  2. Step 2: Convert to fraction form
    66,136.24/91,218 = 45,983.04/x
  3. Step 3: Cross multiply
    66,136.24x = 91,218 × 45,983.04
  4. Step 4: Simplify right side
    66,136.24x = 4,194,480,600.65
  5. Step 5: Solve for x
    x = 4,194,480,600.65/66,136.24
  6. Step 6: Final answer
    x = 63,421.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.