Home / 75,277.38-112,916.13-19,121.70

Finding the Fourth Proportional to 75,277.38, 112,916.13 and 19,121.70

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Solution

The fourth proportional to 75,277.38, 112,916.13 and 19,121.70 is: 28,682.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,277.38 : 112,916.13 = 19,121.70 : x
  2. Step 2: Convert to fraction form
    75,277.38/112,916.13 = 19,121.70/x
  3. Step 3: Cross multiply
    75,277.38x = 112,916.13 × 19,121.70
  4. Step 4: Simplify right side
    75,277.38x = 2,159,148,363.02
  5. Step 5: Solve for x
    x = 2,159,148,363.02/75,277.38
  6. Step 6: Final answer
    x = 28,682.57

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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.