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Finding the Fourth Proportional to 86,910.80, 130,414.80 and 36,982.40

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Solution

The fourth proportional to 86,910.80, 130,414.80 and 36,982.40 is: 55,494.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,910.80 : 130,414.80 = 36,982.40 : x
  2. Step 2: Convert to fraction form
    86,910.80/130,414.80 = 36,982.40/x
  3. Step 3: Cross multiply
    86,910.80x = 130,414.80 × 36,982.40
  4. Step 4: Simplify right side
    86,910.80x = 4,823,052,299.52
  5. Step 5: Solve for x
    x = 4,823,052,299.52/86,910.80
  6. Step 6: Final answer
    x = 55,494.28

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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.