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Finding the Fourth Proportional to 81,104.34, 121,656.42 and 59,057.96

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Solution

The fourth proportional to 81,104.34, 121,656.42 and 59,057.96 is: 88,586.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,104.34 : 121,656.42 = 59,057.96 : x
  2. Step 2: Convert to fraction form
    81,104.34/121,656.42 = 59,057.96/x
  3. Step 3: Cross multiply
    81,104.34x = 121,656.42 × 59,057.96
  4. Step 4: Simplify right side
    81,104.34x = 7,184,779,986.10
  5. Step 5: Solve for x
    x = 7,184,779,986.10/81,104.34
  6. Step 6: Final answer
    x = 88,586.87

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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.