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Finding the Fourth Proportional to 90,489.51, 135,745.74 and 34,349.22

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Solution

The fourth proportional to 90,489.51, 135,745.74 and 34,349.22 is: 51,528.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,489.51 : 135,745.74 = 34,349.22 : x
  2. Step 2: Convert to fraction form
    90,489.51/135,745.74 = 34,349.22/x
  3. Step 3: Cross multiply
    90,489.51x = 135,745.74 × 34,349.22
  4. Step 4: Simplify right side
    90,489.51x = 4,662,760,287.32
  5. Step 5: Solve for x
    x = 4,662,760,287.32/90,489.51
  6. Step 6: Final answer
    x = 51,528.19

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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.