Home / 74,979.96-103,472.37-40,988.60

Finding the Fourth Proportional to 74,979.96, 103,472.37 and 40,988.60

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Solution

The fourth proportional to 74,979.96, 103,472.37 and 40,988.60 is: 56,564.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,979.96 : 103,472.37 = 40,988.60 : x
  2. Step 2: Convert to fraction form
    74,979.96/103,472.37 = 40,988.60/x
  3. Step 3: Cross multiply
    74,979.96x = 103,472.37 × 40,988.60
  4. Step 4: Simplify right side
    74,979.96x = 4,241,187,584.98
  5. Step 5: Solve for x
    x = 4,241,187,584.98/74,979.96
  6. Step 6: Final answer
    x = 56,564.28

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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.