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Finding the Fourth Proportional to 81,507.44, 122,261.16 and 53,798.96

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Solution

The fourth proportional to 81,507.44, 122,261.16 and 53,798.96 is: 80,698.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,507.44 : 122,261.16 = 53,798.96 : x
  2. Step 2: Convert to fraction form
    81,507.44/122,261.16 = 53,798.96/x
  3. Step 3: Cross multiply
    81,507.44x = 122,261.16 × 53,798.96
  4. Step 4: Simplify right side
    81,507.44x = 6,577,523,256.39
  5. Step 5: Solve for x
    x = 6,577,523,256.39/81,507.44
  6. Step 6: Final answer
    x = 80,698.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.