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Finding the Fourth Proportional to 84,900.16, 127,342.90 and 28,739.07

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Solution

The fourth proportional to 84,900.16, 127,342.90 and 28,739.07 is: 43,106.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,900.16 : 127,342.90 = 28,739.07 : x
  2. Step 2: Convert to fraction form
    84,900.16/127,342.90 = 28,739.07/x
  3. Step 3: Cross multiply
    84,900.16x = 127,342.90 × 28,739.07
  4. Step 4: Simplify right side
    84,900.16x = 3,659,716,517.10
  5. Step 5: Solve for x
    x = 3,659,716,517.10/84,900.16
  6. Step 6: Final answer
    x = 43,106.12

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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.