Home / 112,620.79-155,414.62-61,632.50

Finding the Fourth Proportional to 112,620.79, 155,414.62 and 61,632.50

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Solution

The fourth proportional to 112,620.79, 155,414.62 and 61,632.50 is: 85,051.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,620.79 : 155,414.62 = 61,632.50 : x
  2. Step 2: Convert to fraction form
    112,620.79/155,414.62 = 61,632.50/x
  3. Step 3: Cross multiply
    112,620.79x = 155,414.62 × 61,632.50
  4. Step 4: Simplify right side
    112,620.79x = 9,578,591,394.64
  5. Step 5: Solve for x
    x = 9,578,591,394.64/112,620.79
  6. Step 6: Final answer
    x = 85,051.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.