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Finding the Fourth Proportional to 86,881.67, 130,414.62 and 76,950.89

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Solution

The fourth proportional to 86,881.67, 130,414.62 and 76,950.89 is: 115,507.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,881.67 : 130,414.62 = 76,950.89 : x
  2. Step 2: Convert to fraction form
    86,881.67/130,414.62 = 76,950.89/x
  3. Step 3: Cross multiply
    86,881.67x = 130,414.62 × 76,950.89
  4. Step 4: Simplify right side
    86,881.67x = 10,035,520,425.94
  5. Step 5: Solve for x
    x = 10,035,520,425.94/86,881.67
  6. Step 6: Final answer
    x = 115,507.92

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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.