Home / 78,103.24-117,136.57-21,948.71

Finding the Fourth Proportional to 78,103.24, 117,136.57 and 21,948.71

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Solution

The fourth proportional to 78,103.24, 117,136.57 and 21,948.71 is: 32,917.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,103.24 : 117,136.57 = 21,948.71 : x
  2. Step 2: Convert to fraction form
    78,103.24/117,136.57 = 21,948.71/x
  3. Step 3: Cross multiply
    78,103.24x = 117,136.57 × 21,948.71
  4. Step 4: Simplify right side
    78,103.24x = 2,570,996,605.32
  5. Step 5: Solve for x
    x = 2,570,996,605.32/78,103.24
  6. Step 6: Final answer
    x = 32,917.93

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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.