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Finding the Fourth Proportional to 72,119.58, 108,235.17 and 47,152.86

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Solution

The fourth proportional to 72,119.58, 108,235.17 and 47,152.86 is: 70,765.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,119.58 : 108,235.17 = 47,152.86 : x
  2. Step 2: Convert to fraction form
    72,119.58/108,235.17 = 47,152.86/x
  3. Step 3: Cross multiply
    72,119.58x = 108,235.17 × 47,152.86
  4. Step 4: Simplify right side
    72,119.58x = 5,103,597,818.09
  5. Step 5: Solve for x
    x = 5,103,597,818.09/72,119.58
  6. Step 6: Final answer
    x = 70,765.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.