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Finding the Fourth Proportional to 68,399.90, 102,599.40 and 18,484.98

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Solution

The fourth proportional to 68,399.90, 102,599.40 and 18,484.98 is: 27,727.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,399.90 : 102,599.40 = 18,484.98 : x
  2. Step 2: Convert to fraction form
    68,399.90/102,599.40 = 18,484.98/x
  3. Step 3: Cross multiply
    68,399.90x = 102,599.40 × 18,484.98
  4. Step 4: Simplify right side
    68,399.90x = 1,896,547,857.01
  5. Step 5: Solve for x
    x = 1,896,547,857.01/68,399.90
  6. Step 6: Final answer
    x = 27,727.35

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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.