Home / 90,989.64-125,564.40-50,705.10

Finding the Fourth Proportional to 90,989.64, 125,564.40 and 50,705.10

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Solution

The fourth proportional to 90,989.64, 125,564.40 and 50,705.10 is: 69,972.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,989.64 : 125,564.40 = 50,705.10 : x
  2. Step 2: Convert to fraction form
    90,989.64/125,564.40 = 50,705.10/x
  3. Step 3: Cross multiply
    90,989.64x = 125,564.40 × 50,705.10
  4. Step 4: Simplify right side
    90,989.64x = 6,366,755,458.44
  5. Step 5: Solve for x
    x = 6,366,755,458.44/90,989.64
  6. Step 6: Final answer
    x = 69,972.31

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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.