Home / 90,748.12-136,161.18-31,551.52

Finding the Fourth Proportional to 90,748.12, 136,161.18 and 31,551.52

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Solution

The fourth proportional to 90,748.12, 136,161.18 and 31,551.52 is: 47,340.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,748.12 : 136,161.18 = 31,551.52 : x
  2. Step 2: Convert to fraction form
    90,748.12/136,161.18 = 31,551.52/x
  3. Step 3: Cross multiply
    90,748.12x = 136,161.18 × 31,551.52
  4. Step 4: Simplify right side
    90,748.12x = 4,296,092,193.99
  5. Step 5: Solve for x
    x = 4,296,092,193.99/90,748.12
  6. Step 6: Final answer
    x = 47,340.84

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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.