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Finding the Fourth Proportional to 86,713, 130,066.60 and 36,760.96

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Solution

The fourth proportional to 86,713, 130,066.60 and 36,760.96 is: 55,140.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,713 : 130,066.60 = 36,760.96 : x
  2. Step 2: Convert to fraction form
    86,713/130,066.60 = 36,760.96/x
  3. Step 3: Cross multiply
    86,713x = 130,066.60 × 36,760.96
  4. Step 4: Simplify right side
    86,713x = 4,781,373,079.94
  5. Step 5: Solve for x
    x = 4,781,373,079.94/86,713
  6. Step 6: Final answer
    x = 55,140.21

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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.