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Finding the Fourth Proportional to 68,803.16, 103,202.58 and 19,555.16

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Solution

The fourth proportional to 68,803.16, 103,202.58 and 19,555.16 is: 29,332.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,803.16 : 103,202.58 = 19,555.16 : x
  2. Step 2: Convert to fraction form
    68,803.16/103,202.58 = 19,555.16/x
  3. Step 3: Cross multiply
    68,803.16x = 103,202.58 × 19,555.16
  4. Step 4: Simplify right side
    68,803.16x = 2,018,142,964.31
  5. Step 5: Solve for x
    x = 2,018,142,964.31/68,803.16
  6. Step 6: Final answer
    x = 29,332.13

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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.