Home / 81,763.36-112,830.24-49,985.44

Finding the Fourth Proportional to 81,763.36, 112,830.24 and 49,985.44

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Solution

The fourth proportional to 81,763.36, 112,830.24 and 49,985.44 is: 68,977.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,763.36 : 112,830.24 = 49,985.44 : x
  2. Step 2: Convert to fraction form
    81,763.36/112,830.24 = 49,985.44/x
  3. Step 3: Cross multiply
    81,763.36x = 112,830.24 × 49,985.44
  4. Step 4: Simplify right side
    81,763.36x = 5,639,869,191.71
  5. Step 5: Solve for x
    x = 5,639,869,191.71/81,763.36
  6. Step 6: Final answer
    x = 68,977.95

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.