Home / 57,136.44-78,840.90-31,985.94

Finding the Fourth Proportional to 57,136.44, 78,840.90 and 31,985.94

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Solution

The fourth proportional to 57,136.44, 78,840.90 and 31,985.94 is: 44,136.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,136.44 : 78,840.90 = 31,985.94 : x
  2. Step 2: Convert to fraction form
    57,136.44/78,840.90 = 31,985.94/x
  3. Step 3: Cross multiply
    57,136.44x = 78,840.90 × 31,985.94
  4. Step 4: Simplify right side
    57,136.44x = 2,521,800,296.95
  5. Step 5: Solve for x
    x = 2,521,800,296.95/57,136.44
  6. Step 6: Final answer
    x = 44,136.46

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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.