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Finding the Fourth Proportional to 88,166.87, 121,672.68 and 51,870.86

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Solution

The fourth proportional to 88,166.87, 121,672.68 and 51,870.86 is: 71,583.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,166.87 : 121,672.68 = 51,870.86 : x
  2. Step 2: Convert to fraction form
    88,166.87/121,672.68 = 51,870.86/x
  3. Step 3: Cross multiply
    88,166.87x = 121,672.68 × 51,870.86
  4. Step 4: Simplify right side
    88,166.87x = 6,311,266,854.29
  5. Step 5: Solve for x
    x = 6,311,266,854.29/88,166.87
  6. Step 6: Final answer
    x = 71,583.21

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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.