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Finding the Fourth Proportional to 68,815.04, 103,239.80 and 19,567.04

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Solution

The fourth proportional to 68,815.04, 103,239.80 and 19,567.04 is: 29,355.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,815.04 : 103,239.80 = 19,567.04 : x
  2. Step 2: Convert to fraction form
    68,815.04/103,239.80 = 19,567.04/x
  3. Step 3: Cross multiply
    68,815.04x = 103,239.80 × 19,567.04
  4. Step 4: Simplify right side
    68,815.04x = 2,020,097,296.19
  5. Step 5: Solve for x
    x = 2,020,097,296.19/68,815.04
  6. Step 6: Final answer
    x = 29,355.46

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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.