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Finding the Fourth Proportional to 65,163.74, 89,923.50 and 36,870.03

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Solution

The fourth proportional to 65,163.74, 89,923.50 and 36,870.03 is: 50,879.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,163.74 : 89,923.50 = 36,870.03 : x
  2. Step 2: Convert to fraction form
    65,163.74/89,923.50 = 36,870.03/x
  3. Step 3: Cross multiply
    65,163.74x = 89,923.50 × 36,870.03
  4. Step 4: Simplify right side
    65,163.74x = 3,315,482,142.71
  5. Step 5: Solve for x
    x = 3,315,482,142.71/65,163.74
  6. Step 6: Final answer
    x = 50,879.25

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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.