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Finding the Fourth Proportional to 88,124.31, 121,608.05 and 47,836.71

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Solution

The fourth proportional to 88,124.31, 121,608.05 and 47,836.71 is: 66,012.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,124.31 : 121,608.05 = 47,836.71 : x
  2. Step 2: Convert to fraction form
    88,124.31/121,608.05 = 47,836.71/x
  3. Step 3: Cross multiply
    88,124.31x = 121,608.05 × 47,836.71
  4. Step 4: Simplify right side
    88,124.31x = 5,817,328,782.33
  5. Step 5: Solve for x
    x = 5,817,328,782.33/88,124.31
  6. Step 6: Final answer
    x = 66,012.76

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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.