Home / 79,520.40-109,748.52-51,308.16

Finding the Fourth Proportional to 79,520.40, 109,748.52 and 51,308.16

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Solution

The fourth proportional to 79,520.40, 109,748.52 and 51,308.16 is: 70,811.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,520.40 : 109,748.52 = 51,308.16 : x
  2. Step 2: Convert to fraction form
    79,520.40/109,748.52 = 51,308.16/x
  3. Step 3: Cross multiply
    79,520.40x = 109,748.52 × 51,308.16
  4. Step 4: Simplify right side
    79,520.40x = 5,630,994,623.92
  5. Step 5: Solve for x
    x = 5,630,994,623.92/79,520.40
  6. Step 6: Final answer
    x = 70,811.95

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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.