Home / 85,965.50-128,998.37-36,041.76

Finding the Fourth Proportional to 85,965.50, 128,998.37 and 36,041.76

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Solution

The fourth proportional to 85,965.50, 128,998.37 and 36,041.76 is: 54,083.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,965.50 : 128,998.37 = 36,041.76 : x
  2. Step 2: Convert to fraction form
    85,965.50/128,998.37 = 36,041.76/x
  3. Step 3: Cross multiply
    85,965.50x = 128,998.37 × 36,041.76
  4. Step 4: Simplify right side
    85,965.50x = 4,649,328,382.04
  5. Step 5: Solve for x
    x = 4,649,328,382.04/85,965.50
  6. Step 6: Final answer
    x = 54,083.65

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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.