Home / 81,515.08-122,247.36-39,368.96

Finding the Fourth Proportional to 81,515.08, 122,247.36 and 39,368.96

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Solution

The fourth proportional to 81,515.08, 122,247.36 and 39,368.96 is: 59,041.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,515.08 : 122,247.36 = 39,368.96 : x
  2. Step 2: Convert to fraction form
    81,515.08/122,247.36 = 39,368.96/x
  3. Step 3: Cross multiply
    81,515.08x = 122,247.36 × 39,368.96
  4. Step 4: Simplify right side
    81,515.08x = 4,812,751,425.95
  5. Step 5: Solve for x
    x = 4,812,751,425.95/81,515.08
  6. Step 6: Final answer
    x = 59,041.24

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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.