Home / 85,391,426.44-128,087,136.91-20,695,231.59

Finding the Fourth Proportional to 85,391,426.44, 128,087,136.91 and 20,695,231.59

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Solution

The fourth proportional to 85,391,426.44, 128,087,136.91 and 20,695,231.59 is: 31,042,846.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,391,426.44 : 128,087,136.91 = 20,695,231.59 : x
  2. Step 2: Convert to fraction form
    85,391,426.44/128,087,136.91 = 20,695,231.59/x
  3. Step 3: Cross multiply
    85,391,426.44x = 128,087,136.91 × 20,695,231.59
  4. Step 4: Simplify right side
    85,391,426.44x = 2,650,792,961,598,029
  5. Step 5: Solve for x
    x = 2,650,792,961,598,029/85,391,426.44
  6. Step 6: Final answer
    x = 31,042,846.71

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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.