Home / 74,278.76-111,288.51-61,878.47

Finding the Fourth Proportional to 74,278.76, 111,288.51 and 61,878.47

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Solution

The fourth proportional to 74,278.76, 111,288.51 and 61,878.47 is: 92,709.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,278.76 : 111,288.51 = 61,878.47 : x
  2. Step 2: Convert to fraction form
    74,278.76/111,288.51 = 61,878.47/x
  3. Step 3: Cross multiply
    74,278.76x = 111,288.51 × 61,878.47
  4. Step 4: Simplify right side
    74,278.76x = 6,886,362,170.94
  5. Step 5: Solve for x
    x = 6,886,362,170.94/74,278.76
  6. Step 6: Final answer
    x = 92,709.71

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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.