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Finding the Fourth Proportional to 86,040, 118,741.68 and 52,512.48

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Solution

The fourth proportional to 86,040, 118,741.68 and 52,512.48 is: 72,471.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,040 : 118,741.68 = 52,512.48 : x
  2. Step 2: Convert to fraction form
    86,040/118,741.68 = 52,512.48/x
  3. Step 3: Cross multiply
    86,040x = 118,741.68 × 52,512.48
  4. Step 4: Simplify right side
    86,040x = 6,235,420,096.17
  5. Step 5: Solve for x
    x = 6,235,420,096.17/86,040
  6. Step 6: Final answer
    x = 72,471.18

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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.