Home / 61,611.10-85,036.60-38,935.70

Finding the Fourth Proportional to 61,611.10, 85,036.60 and 38,935.70

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Solution

The fourth proportional to 61,611.10, 85,036.60 and 38,935.70 is: 53,739.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,611.10 : 85,036.60 = 38,935.70 : x
  2. Step 2: Convert to fraction form
    61,611.10/85,036.60 = 38,935.70/x
  3. Step 3: Cross multiply
    61,611.10x = 85,036.60 × 38,935.70
  4. Step 4: Simplify right side
    61,611.10x = 3,310,959,546.62
  5. Step 5: Solve for x
    x = 3,310,959,546.62/61,611.10
  6. Step 6: Final answer
    x = 53,739.66

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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.