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Finding the Fourth Proportional to 77,757.52, 107,268.42 and 45,905.08

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Solution

The fourth proportional to 77,757.52, 107,268.42 and 45,905.08 is: 63,327.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,757.52 : 107,268.42 = 45,905.08 : x
  2. Step 2: Convert to fraction form
    77,757.52/107,268.42 = 45,905.08/x
  3. Step 3: Cross multiply
    77,757.52x = 107,268.42 × 45,905.08
  4. Step 4: Simplify right side
    77,757.52x = 4,924,165,401.57
  5. Step 5: Solve for x
    x = 4,924,165,401.57/77,757.52
  6. Step 6: Final answer
    x = 63,327.19

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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.