Home / 74,916.85-112,391.69-28,169.72

Finding the Fourth Proportional to 74,916.85, 112,391.69 and 28,169.72

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Solution

The fourth proportional to 74,916.85, 112,391.69 and 28,169.72 is: 42,260.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,916.85 : 112,391.69 = 28,169.72 : x
  2. Step 2: Convert to fraction form
    74,916.85/112,391.69 = 28,169.72/x
  3. Step 3: Cross multiply
    74,916.85x = 112,391.69 × 28,169.72
  4. Step 4: Simplify right side
    74,916.85x = 3,166,042,577.76
  5. Step 5: Solve for x
    x = 3,166,042,577.76/74,916.85
  6. Step 6: Final answer
    x = 42,260.76

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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.