Home / 65,120.12-89,866.10-36,439.85

Finding the Fourth Proportional to 65,120.12, 89,866.10 and 36,439.85

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Solution

The fourth proportional to 65,120.12, 89,866.10 and 36,439.85 is: 50,287.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,120.12 : 89,866.10 = 36,439.85 : x
  2. Step 2: Convert to fraction form
    65,120.12/89,866.10 = 36,439.85/x
  3. Step 3: Cross multiply
    65,120.12x = 89,866.10 × 36,439.85
  4. Step 4: Simplify right side
    65,120.12x = 3,274,706,572.56
  5. Step 5: Solve for x
    x = 3,274,706,572.56/65,120.12
  6. Step 6: Final answer
    x = 50,287.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.