Home / 86,505.50-129,758.05-33,878.18

Finding the Fourth Proportional to 86,505.50, 129,758.05 and 33,878.18

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Solution

The fourth proportional to 86,505.50, 129,758.05 and 33,878.18 is: 50,817.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,505.50 : 129,758.05 = 33,878.18 : x
  2. Step 2: Convert to fraction form
    86,505.50/129,758.05 = 33,878.18/x
  3. Step 3: Cross multiply
    86,505.50x = 129,758.05 × 33,878.18
  4. Step 4: Simplify right side
    86,505.50x = 4,395,966,941.09
  5. Step 5: Solve for x
    x = 4,395,966,941.09/86,505.50
  6. Step 6: Final answer
    x = 50,817.19

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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.