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Finding the Fourth Proportional to 88,310.37, 121,871.52 and 50,591.91

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Solution

The fourth proportional to 88,310.37, 121,871.52 and 50,591.91 is: 69,818.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,310.37 : 121,871.52 = 50,591.91 : x
  2. Step 2: Convert to fraction form
    88,310.37/121,871.52 = 50,591.91/x
  3. Step 3: Cross multiply
    88,310.37x = 121,871.52 × 50,591.91
  4. Step 4: Simplify right side
    88,310.37x = 6,165,712,971.40
  5. Step 5: Solve for x
    x = 6,165,712,971.40/88,310.37
  6. Step 6: Final answer
    x = 69,818.67

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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.