Home / 81,246.30-121,869.45-61,563.30

Finding the Fourth Proportional to 81,246.30, 121,869.45 and 61,563.30

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Solution

The fourth proportional to 81,246.30, 121,869.45 and 61,563.30 is: 92,344.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,246.30 : 121,869.45 = 61,563.30 : x
  2. Step 2: Convert to fraction form
    81,246.30/121,869.45 = 61,563.30/x
  3. Step 3: Cross multiply
    81,246.30x = 121,869.45 × 61,563.30
  4. Step 4: Simplify right side
    81,246.30x = 7,502,685,511.19
  5. Step 5: Solve for x
    x = 7,502,685,511.19/81,246.30
  6. Step 6: Final answer
    x = 92,344.95

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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.