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Finding the Fourth Proportional to 86,758.46, 130,074.81 and 58,608.12

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Solution

The fourth proportional to 86,758.46, 130,074.81 and 58,608.12 is: 87,869.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,758.46 : 130,074.81 = 58,608.12 : x
  2. Step 2: Convert to fraction form
    86,758.46/130,074.81 = 58,608.12/x
  3. Step 3: Cross multiply
    86,758.46x = 130,074.81 × 58,608.12
  4. Step 4: Simplify right side
    86,758.46x = 7,623,440,671.13
  5. Step 5: Solve for x
    x = 7,623,440,671.13/86,758.46
  6. Step 6: Final answer
    x = 87,869.71

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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.