Home / 81,742.29-122,499.24-39,611.20

Finding the Fourth Proportional to 81,742.29, 122,499.24 and 39,611.20

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Solution

The fourth proportional to 81,742.29, 122,499.24 and 39,611.20 is: 59,361.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,742.29 : 122,499.24 = 39,611.20 : x
  2. Step 2: Convert to fraction form
    81,742.29/122,499.24 = 39,611.20/x
  3. Step 3: Cross multiply
    81,742.29x = 122,499.24 × 39,611.20
  4. Step 4: Simplify right side
    81,742.29x = 4,852,341,895.49
  5. Step 5: Solve for x
    x = 4,852,341,895.49/81,742.29
  6. Step 6: Final answer
    x = 59,361.46

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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.