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Finding the Fourth Proportional to 80,394.16, 110,921.32 and 63,345.56

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Solution

The fourth proportional to 80,394.16, 110,921.32 and 63,345.56 is: 87,399.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,394.16 : 110,921.32 = 63,345.56 : x
  2. Step 2: Convert to fraction form
    80,394.16/110,921.32 = 63,345.56/x
  3. Step 3: Cross multiply
    80,394.16x = 110,921.32 × 63,345.56
  4. Step 4: Simplify right side
    80,394.16x = 7,026,373,131.34
  5. Step 5: Solve for x
    x = 7,026,373,131.34/80,394.16
  6. Step 6: Final answer
    x = 87,399.05

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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.