Home / 66,186.40-99,279.60-39,877.60

Finding the Fourth Proportional to 66,186.40, 99,279.60 and 39,877.60

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Solution

The fourth proportional to 66,186.40, 99,279.60 and 39,877.60 is: 59,816.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,186.40 : 99,279.60 = 39,877.60 : x
  2. Step 2: Convert to fraction form
    66,186.40/99,279.60 = 39,877.60/x
  3. Step 3: Cross multiply
    66,186.40x = 99,279.60 × 39,877.60
  4. Step 4: Simplify right side
    66,186.40x = 3,959,032,176.96
  5. Step 5: Solve for x
    x = 3,959,032,176.96/66,186.40
  6. Step 6: Final answer
    x = 59,816.40

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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.