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Finding the Fourth Proportional to 79,753,661.60, 119,630,492.40 and 25,906,416.80

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Solution

The fourth proportional to 79,753,661.60, 119,630,492.40 and 25,906,416.80 is: 38,859,625.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,753,661.60 : 119,630,492.40 = 25,906,416.80 : x
  2. Step 2: Convert to fraction form
    79,753,661.60/119,630,492.40 = 25,906,416.80/x
  3. Step 3: Cross multiply
    79,753,661.60x = 119,630,492.40 × 25,906,416.80
  4. Step 4: Simplify right side
    79,753,661.60x = 3,099,197,398,103,632.50
  5. Step 5: Solve for x
    x = 3,099,197,398,103,632.50/79,753,661.60
  6. Step 6: Final answer
    x = 38,859,625.20

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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.