Home / 82,378,631.20-123,567,946.80-20,967,671.20

Finding the Fourth Proportional to 82,378,631.20, 123,567,946.80 and 20,967,671.20

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Solution

The fourth proportional to 82,378,631.20, 123,567,946.80 and 20,967,671.20 is: 31,451,506.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,378,631.20 : 123,567,946.80 = 20,967,671.20 : x
  2. Step 2: Convert to fraction form
    82,378,631.20/123,567,946.80 = 20,967,671.20/x
  3. Step 3: Cross multiply
    82,378,631.20x = 123,567,946.80 × 20,967,671.20
  4. Step 4: Simplify right side
    82,378,631.20x = 2,590,932,079,361,492
  5. Step 5: Solve for x
    x = 2,590,932,079,361,492/82,378,631.20
  6. Step 6: Final answer
    x = 31,451,506.80

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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.