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Finding the Fourth Proportional to 91,767.77, 126,640.40 and 51,482.40

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Solution

The fourth proportional to 91,767.77, 126,640.40 and 51,482.40 is: 71,046.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,767.77 : 126,640.40 = 51,482.40 : x
  2. Step 2: Convert to fraction form
    91,767.77/126,640.40 = 51,482.40/x
  3. Step 3: Cross multiply
    91,767.77x = 126,640.40 × 51,482.40
  4. Step 4: Simplify right side
    91,767.77x = 6,519,751,471.55
  5. Step 5: Solve for x
    x = 6,519,751,471.55/91,767.77
  6. Step 6: Final answer
    x = 71,046.21

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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.