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Finding the Fourth Proportional to 91,163.50, 125,810.55 and 53,449.90

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Solution

The fourth proportional to 91,163.50, 125,810.55 and 53,449.90 is: 73,763.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,163.50 : 125,810.55 = 53,449.90 : x
  2. Step 2: Convert to fraction form
    91,163.50/125,810.55 = 53,449.90/x
  3. Step 3: Cross multiply
    91,163.50x = 125,810.55 × 53,449.90
  4. Step 4: Simplify right side
    91,163.50x = 6,724,561,316.45
  5. Step 5: Solve for x
    x = 6,724,561,316.45/91,163.50
  6. Step 6: Final answer
    x = 73,763.75

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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.