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Finding the Fourth Proportional to 20,696,311.60, 31,044,467.40 and 20,360,388.40

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Solution

The fourth proportional to 20,696,311.60, 31,044,467.40 and 20,360,388.40 is: 30,540,582.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,696,311.60 : 31,044,467.40 = 20,360,388.40 : x
  2. Step 2: Convert to fraction form
    20,696,311.60/31,044,467.40 = 20,360,388.40/x
  3. Step 3: Cross multiply
    20,696,311.60x = 31,044,467.40 × 20,360,388.40
  4. Step 4: Simplify right side
    20,696,311.60x = 632,077,413,935,138.12
  5. Step 5: Solve for x
    x = 632,077,413,935,138.12/20,696,311.60
  6. Step 6: Final answer
    x = 30,540,582.60

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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.