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Finding the Fourth Proportional to 91,941, 126,880.26 and 51,108.96

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Solution

The fourth proportional to 91,941, 126,880.26 and 51,108.96 is: 70,531.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,941 : 126,880.26 = 51,108.96 : x
  2. Step 2: Convert to fraction form
    91,941/126,880.26 = 51,108.96/x
  3. Step 3: Cross multiply
    91,941x = 126,880.26 × 51,108.96
  4. Step 4: Simplify right side
    91,941x = 6,484,718,133.13
  5. Step 5: Solve for x
    x = 6,484,718,133.13/91,941
  6. Step 6: Final answer
    x = 70,531.30

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1.5x scale

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.