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Finding the Fourth Proportional to 101,775, 140,449.56 and 56,451.48

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Solution

The fourth proportional to 101,775, 140,449.56 and 56,451.48 is: 77,903.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,775 : 140,449.56 = 56,451.48 : x
  2. Step 2: Convert to fraction form
    101,775/140,449.56 = 56,451.48/x
  3. Step 3: Cross multiply
    101,775x = 140,449.56 × 56,451.48
  4. Step 4: Simplify right side
    101,775x = 7,928,585,527.35
  5. Step 5: Solve for x
    x = 7,928,585,527.35/101,775
  6. Step 6: Final answer
    x = 77,903.08

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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.