Home / 74,931.80-112,067.22-66,669.80

Finding the Fourth Proportional to 74,931.80, 112,067.22 and 66,669.80

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Solution

The fourth proportional to 74,931.80, 112,067.22 and 66,669.80 is: 99,710.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,931.80 : 112,067.22 = 66,669.80 : x
  2. Step 2: Convert to fraction form
    74,931.80/112,067.22 = 66,669.80/x
  3. Step 3: Cross multiply
    74,931.80x = 112,067.22 × 66,669.80
  4. Step 4: Simplify right side
    74,931.80x = 7,471,499,143.96
  5. Step 5: Solve for x
    x = 7,471,499,143.96/74,931.80
  6. Step 6: Final answer
    x = 99,710.66

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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.