Home / 90,660.64-125,111.28-50,380.96

Finding the Fourth Proportional to 90,660.64, 125,111.28 and 50,380.96

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Solution

The fourth proportional to 90,660.64, 125,111.28 and 50,380.96 is: 69,525.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,660.64 : 125,111.28 = 50,380.96 : x
  2. Step 2: Convert to fraction form
    90,660.64/125,111.28 = 50,380.96/x
  3. Step 3: Cross multiply
    90,660.64x = 125,111.28 × 50,380.96
  4. Step 4: Simplify right side
    90,660.64x = 6,303,226,393.23
  5. Step 5: Solve for x
    x = 6,303,226,393.23/90,660.64
  6. Step 6: Final answer
    x = 69,525.50

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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.