Home / 90,281.22-135,338.90-31,102.82

Finding the Fourth Proportional to 90,281.22, 135,338.90 and 31,102.82

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Solution

The fourth proportional to 90,281.22, 135,338.90 and 31,102.82 is: 46,625.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,281.22 : 135,338.90 = 31,102.82 : x
  2. Step 2: Convert to fraction form
    90,281.22/135,338.90 = 31,102.82/x
  3. Step 3: Cross multiply
    90,281.22x = 135,338.90 × 31,102.82
  4. Step 4: Simplify right side
    90,281.22x = 4,209,421,445.70
  5. Step 5: Solve for x
    x = 4,209,421,445.70/90,281.22
  6. Step 6: Final answer
    x = 46,625.66

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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.