Home / 74,901.16-112,338.78-28,145.80

Finding the Fourth Proportional to 74,901.16, 112,338.78 and 28,145.80

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Solution

The fourth proportional to 74,901.16, 112,338.78 and 28,145.80 is: 42,213.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,901.16 : 112,338.78 = 28,145.80 : x
  2. Step 2: Convert to fraction form
    74,901.16/112,338.78 = 28,145.80/x
  3. Step 3: Cross multiply
    74,901.16x = 112,338.78 × 28,145.80
  4. Step 4: Simplify right side
    74,901.16x = 3,161,864,834.12
  5. Step 5: Solve for x
    x = 3,161,864,834.12/74,901.16
  6. Step 6: Final answer
    x = 42,213.83

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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.