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Finding the Fourth Proportional to 84,900.66, 127,343.66 and 28,739.57

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Solution

The fourth proportional to 84,900.66, 127,343.66 and 28,739.57 is: 43,106.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,900.66 : 127,343.66 = 28,739.57 : x
  2. Step 2: Convert to fraction form
    84,900.66/127,343.66 = 28,739.57/x
  3. Step 3: Cross multiply
    84,900.66x = 127,343.66 × 28,739.57
  4. Step 4: Simplify right side
    84,900.66x = 3,659,801,250.21
  5. Step 5: Solve for x
    x = 3,659,801,250.21/84,900.66
  6. Step 6: Final answer
    x = 43,106.86

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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.