Home / 88,122.81-121,609.55-47,836.56

Finding the Fourth Proportional to 88,122.81, 121,609.55 and 47,836.56

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Solution

The fourth proportional to 88,122.81, 121,609.55 and 47,836.56 is: 66,014.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,122.81 : 121,609.55 = 47,836.56 : x
  2. Step 2: Convert to fraction form
    88,122.81/121,609.55 = 47,836.56/x
  3. Step 3: Cross multiply
    88,122.81x = 121,609.55 × 47,836.56
  4. Step 4: Simplify right side
    88,122.81x = 5,817,382,295.97
  5. Step 5: Solve for x
    x = 5,817,382,295.97/88,122.81
  6. Step 6: Final answer
    x = 66,014.49

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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.