Home / 90,281.53-135,434.16-31,101.31

Finding the Fourth Proportional to 90,281.53, 135,434.16 and 31,101.31

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Solution

The fourth proportional to 90,281.53, 135,434.16 and 31,101.31 is: 46,656.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,281.53 : 135,434.16 = 31,101.31 : x
  2. Step 2: Convert to fraction form
    90,281.53/135,434.16 = 31,101.31/x
  3. Step 3: Cross multiply
    90,281.53x = 135,434.16 × 31,101.31
  4. Step 4: Simplify right side
    90,281.53x = 4,212,179,794.75
  5. Step 5: Solve for x
    x = 4,212,179,794.75/90,281.53
  6. Step 6: Final answer
    x = 46,656.05

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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.