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Finding the Fourth Proportional to 68,796,200.16, 103,209,230.16 and 20,925,900

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Solution

The fourth proportional to 68,796,200.16, 103,209,230.16 and 20,925,900 is: 31,393,391.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,796,200.16 : 103,209,230.16 = 20,925,900 : x
  2. Step 2: Convert to fraction form
    68,796,200.16/103,209,230.16 = 20,925,900/x
  3. Step 3: Cross multiply
    68,796,200.16x = 103,209,230.16 × 20,925,900
  4. Step 4: Simplify right side
    68,796,200.16x = 2,159,746,029,405,144
  5. Step 5: Solve for x
    x = 2,159,746,029,405,144/68,796,200.16
  6. Step 6: Final answer
    x = 31,393,391.27

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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.