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Finding the Fourth Proportional to 85,080.68, 127,639.48 and 25,914.80

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Solution

The fourth proportional to 85,080.68, 127,639.48 and 25,914.80 is: 38,877.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,080.68 : 127,639.48 = 25,914.80 : x
  2. Step 2: Convert to fraction form
    85,080.68/127,639.48 = 25,914.80/x
  3. Step 3: Cross multiply
    85,080.68x = 127,639.48 × 25,914.80
  4. Step 4: Simplify right side
    85,080.68x = 3,307,751,596.30
  5. Step 5: Solve for x
    x = 3,307,751,596.30/85,080.68
  6. Step 6: Final answer
    x = 38,877.82

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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.