Home / 74,611.72-103,002.20-57,577.69

Finding the Fourth Proportional to 74,611.72, 103,002.20 and 57,577.69

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Solution

The fourth proportional to 74,611.72, 103,002.20 and 57,577.69 is: 79,486.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,611.72 : 103,002.20 = 57,577.69 : x
  2. Step 2: Convert to fraction form
    74,611.72/103,002.20 = 57,577.69/x
  3. Step 3: Cross multiply
    74,611.72x = 103,002.20 × 57,577.69
  4. Step 4: Simplify right side
    74,611.72x = 5,930,628,740.92
  5. Step 5: Solve for x
    x = 5,930,628,740.92/74,611.72
  6. Step 6: Final answer
    x = 79,486.56

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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.