Home / 90,989.60-125,562.40-50,701.28

Finding the Fourth Proportional to 90,989.60, 125,562.40 and 50,701.28

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Solution

The fourth proportional to 90,989.60, 125,562.40 and 50,701.28 is: 69,965.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,989.60 : 125,562.40 = 50,701.28 : x
  2. Step 2: Convert to fraction form
    90,989.60/125,562.40 = 50,701.28/x
  3. Step 3: Cross multiply
    90,989.60x = 125,562.40 × 50,701.28
  4. Step 4: Simplify right side
    90,989.60x = 6,366,174,399.87
  5. Step 5: Solve for x
    x = 6,366,174,399.87/90,989.60
  6. Step 6: Final answer
    x = 69,965.96

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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.