Home / 69,979.10-104,930.12-47,817.50

Finding the Fourth Proportional to 69,979.10, 104,930.12 and 47,817.50

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Solution

The fourth proportional to 69,979.10, 104,930.12 and 47,817.50 is: 71,699.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,979.10 : 104,930.12 = 47,817.50 : x
  2. Step 2: Convert to fraction form
    69,979.10/104,930.12 = 47,817.50/x
  3. Step 3: Cross multiply
    69,979.10x = 104,930.12 × 47,817.50
  4. Step 4: Simplify right side
    69,979.10x = 5,017,496,013.10
  5. Step 5: Solve for x
    x = 5,017,496,013.10/69,979.10
  6. Step 6: Final answer
    x = 71,699.92

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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.