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Finding the Fourth Proportional to 86,544.70, 129,719.85 and 36,616.30

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Solution

The fourth proportional to 86,544.70, 129,719.85 and 36,616.30 is: 54,883.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,544.70 : 129,719.85 = 36,616.30 : x
  2. Step 2: Convert to fraction form
    86,544.70/129,719.85 = 36,616.30/x
  3. Step 3: Cross multiply
    86,544.70x = 129,719.85 × 36,616.30
  4. Step 4: Simplify right side
    86,544.70x = 4,749,860,943.56
  5. Step 5: Solve for x
    x = 4,749,860,943.56/86,544.70
  6. Step 6: Final answer
    x = 54,883.33

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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.