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Finding the Fourth Proportional to 79,216.60, 109,308.54 and 47,373.88

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Solution

The fourth proportional to 79,216.60, 109,308.54 and 47,373.88 is: 65,369.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,216.60 : 109,308.54 = 47,373.88 : x
  2. Step 2: Convert to fraction form
    79,216.60/109,308.54 = 47,373.88/x
  3. Step 3: Cross multiply
    79,216.60x = 109,308.54 × 47,373.88
  4. Step 4: Simplify right side
    79,216.60x = 5,178,369,656.94
  5. Step 5: Solve for x
    x = 5,178,369,656.94/79,216.60
  6. Step 6: Final answer
    x = 65,369.75

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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.