Home / 89,122.43-122,988.95-51,396.68

Finding the Fourth Proportional to 89,122.43, 122,988.95 and 51,396.68

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Solution

The fourth proportional to 89,122.43, 122,988.95 and 51,396.68 is: 70,927.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,122.43 : 122,988.95 = 51,396.68 : x
  2. Step 2: Convert to fraction form
    89,122.43/122,988.95 = 51,396.68/x
  3. Step 3: Cross multiply
    89,122.43x = 122,988.95 × 51,396.68
  4. Step 4: Simplify right side
    89,122.43x = 6,321,223,399.21
  5. Step 5: Solve for x
    x = 6,321,223,399.21/89,122.43
  6. Step 6: Final answer
    x = 70,927.41

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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.