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Finding the Fourth Proportional to 91,087.65, 125,751.78 and 63,947.03

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Solution

The fourth proportional to 91,087.65, 125,751.78 and 63,947.03 is: 88,282.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,087.65 : 125,751.78 = 63,947.03 : x
  2. Step 2: Convert to fraction form
    91,087.65/125,751.78 = 63,947.03/x
  3. Step 3: Cross multiply
    91,087.65x = 125,751.78 × 63,947.03
  4. Step 4: Simplify right side
    91,087.65x = 8,041,452,219.45
  5. Step 5: Solve for x
    x = 8,041,452,219.45/91,087.65
  6. Step 6: Final answer
    x = 88,282.57

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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.