Home / 91,984.23-138,015.23-39,418.47

Finding the Fourth Proportional to 91,984.23, 138,015.23 and 39,418.47

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Solution

The fourth proportional to 91,984.23, 138,015.23 and 39,418.47 is: 59,144.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,984.23 : 138,015.23 = 39,418.47 : x
  2. Step 2: Convert to fraction form
    91,984.23/138,015.23 = 39,418.47/x
  3. Step 3: Cross multiply
    91,984.23x = 138,015.23 × 39,418.47
  4. Step 4: Simplify right side
    91,984.23x = 5,440,349,006.21
  5. Step 5: Solve for x
    x = 5,440,349,006.21/91,984.23
  6. Step 6: Final answer
    x = 59,144.37

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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.