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Finding the Fourth Proportional to 90,699.95, 125,163.53 and 50,415.41

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Solution

The fourth proportional to 90,699.95, 125,163.53 and 50,415.41 is: 69,571.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,699.95 : 125,163.53 = 50,415.41 : x
  2. Step 2: Convert to fraction form
    90,699.95/125,163.53 = 50,415.41/x
  3. Step 3: Cross multiply
    90,699.95x = 125,163.53 × 50,415.41
  4. Step 4: Simplify right side
    90,699.95x = 6,310,170,931.89
  5. Step 5: Solve for x
    x = 6,310,170,931.89/90,699.95
  6. Step 6: Final answer
    x = 69,571.93

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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.