Home / 66,220.05-91,381.15-36,005.39

Finding the Fourth Proportional to 66,220.05, 91,381.15 and 36,005.39

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Solution

The fourth proportional to 66,220.05, 91,381.15 and 36,005.39 is: 49,686.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,220.05 : 91,381.15 = 36,005.39 : x
  2. Step 2: Convert to fraction form
    66,220.05/91,381.15 = 36,005.39/x
  3. Step 3: Cross multiply
    66,220.05x = 91,381.15 × 36,005.39
  4. Step 4: Simplify right side
    66,220.05x = 3,290,214,237.30
  5. Step 5: Solve for x
    x = 3,290,214,237.30/66,220.05
  6. Step 6: Final answer
    x = 49,686.07

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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.