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Finding the Fourth Proportional to 79,573.32, 109,774.26 and 47,686.86

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Solution

The fourth proportional to 79,573.32, 109,774.26 and 47,686.86 is: 65,785.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,573.32 : 109,774.26 = 47,686.86 : x
  2. Step 2: Convert to fraction form
    79,573.32/109,774.26 = 47,686.86/x
  3. Step 3: Cross multiply
    79,573.32x = 109,774.26 × 47,686.86
  4. Step 4: Simplify right side
    79,573.32x = 5,234,789,768.22
  5. Step 5: Solve for x
    x = 5,234,789,768.22/79,573.32
  6. Step 6: Final answer
    x = 65,785.74

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1.5x scale

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.