Home / 90,592.68-135,855-31,414.08

Finding the Fourth Proportional to 90,592.68, 135,855 and 31,414.08

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Solution

The fourth proportional to 90,592.68, 135,855 and 31,414.08 is: 47,109.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,592.68 : 135,855 = 31,414.08 : x
  2. Step 2: Convert to fraction form
    90,592.68/135,855 = 31,414.08/x
  3. Step 3: Cross multiply
    90,592.68x = 135,855 × 31,414.08
  4. Step 4: Simplify right side
    90,592.68x = 4,267,759,838.40
  5. Step 5: Solve for x
    x = 4,267,759,838.40/90,592.68
  6. Step 6: Final answer
    x = 47,109.32

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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.