Home / 74,329.60-111,202.80-67,331.20

Finding the Fourth Proportional to 74,329.60, 111,202.80 and 67,331.20

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Solution

The fourth proportional to 74,329.60, 111,202.80 and 67,331.20 is: 100,732.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,329.60 : 111,202.80 = 67,331.20 : x
  2. Step 2: Convert to fraction form
    74,329.60/111,202.80 = 67,331.20/x
  3. Step 3: Cross multiply
    74,329.60x = 111,202.80 × 67,331.20
  4. Step 4: Simplify right side
    74,329.60x = 7,487,417,967.36
  5. Step 5: Solve for x
    x = 7,487,417,967.36/74,329.60
  6. Step 6: Final answer
    x = 100,732.66

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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.