Home / 81,440.42-122,239.48-39,350.12

Finding the Fourth Proportional to 81,440.42, 122,239.48 and 39,350.12

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Solution

The fourth proportional to 81,440.42, 122,239.48 and 39,350.12 is: 59,063.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,440.42 : 122,239.48 = 39,350.12 : x
  2. Step 2: Convert to fraction form
    81,440.42/122,239.48 = 39,350.12/x
  3. Step 3: Cross multiply
    81,440.42x = 122,239.48 × 39,350.12
  4. Step 4: Simplify right side
    81,440.42x = 4,810,138,206.74
  5. Step 5: Solve for x
    x = 4,810,138,206.74/81,440.42
  6. Step 6: Final answer
    x = 59,063.28

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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.