Home / 91,396.68-126,126.55-51,109.98

Finding the Fourth Proportional to 91,396.68, 126,126.55 and 51,109.98

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Solution

The fourth proportional to 91,396.68, 126,126.55 and 51,109.98 is: 70,531.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,396.68 : 126,126.55 = 51,109.98 : x
  2. Step 2: Convert to fraction form
    91,396.68/126,126.55 = 51,109.98/x
  3. Step 3: Cross multiply
    91,396.68x = 126,126.55 × 51,109.98
  4. Step 4: Simplify right side
    91,396.68x = 6,446,324,561.79
  5. Step 5: Solve for x
    x = 6,446,324,561.79/91,396.68
  6. Step 6: Final answer
    x = 70,531.28

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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.