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Finding the Fourth Proportional to 90,092.66, 135,141.21 and 42,696.32

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Solution

The fourth proportional to 90,092.66, 135,141.21 and 42,696.32 is: 64,045.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,092.66 : 135,141.21 = 42,696.32 : x
  2. Step 2: Convert to fraction form
    90,092.66/135,141.21 = 42,696.32/x
  3. Step 3: Cross multiply
    90,092.66x = 135,141.21 × 42,696.32
  4. Step 4: Simplify right side
    90,092.66x = 5,770,031,671.64
  5. Step 5: Solve for x
    x = 5,770,031,671.64/90,092.66
  6. Step 6: Final answer
    x = 64,045.53

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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.