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Finding the Fourth Proportional to 68,796,208.16, 103,209,242.16 and 20,925,908

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Solution

The fourth proportional to 68,796,208.16, 103,209,242.16 and 20,925,908 is: 31,393,403.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,796,208.16 : 103,209,242.16 = 20,925,908 : x
  2. Step 2: Convert to fraction form
    68,796,208.16/103,209,242.16 = 20,925,908/x
  3. Step 3: Cross multiply
    68,796,208.16x = 103,209,242.16 × 20,925,908
  4. Step 4: Simplify right side
    68,796,208.16x = 2,159,747,106,189,881.25
  5. Step 5: Solve for x
    x = 2,159,747,106,189,881.25/68,796,208.16
  6. Step 6: Final answer
    x = 31,393,403.27

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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.