Home / 69,979.40-104,969.10-41,985.80

Finding the Fourth Proportional to 69,979.40, 104,969.10 and 41,985.80

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Solution

The fourth proportional to 69,979.40, 104,969.10 and 41,985.80 is: 62,978.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,979.40 : 104,969.10 = 41,985.80 : x
  2. Step 2: Convert to fraction form
    69,979.40/104,969.10 = 41,985.80/x
  3. Step 3: Cross multiply
    69,979.40x = 104,969.10 × 41,985.80
  4. Step 4: Simplify right side
    69,979.40x = 4,407,211,638.78
  5. Step 5: Solve for x
    x = 4,407,211,638.78/69,979.40
  6. Step 6: Final answer
    x = 62,978.70

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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.