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Finding the Fourth Proportional to 68,513.04, 102,786.80 and 19,265.04

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Solution

The fourth proportional to 68,513.04, 102,786.80 and 19,265.04 is: 28,902.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,513.04 : 102,786.80 = 19,265.04 : x
  2. Step 2: Convert to fraction form
    68,513.04/102,786.80 = 19,265.04/x
  3. Step 3: Cross multiply
    68,513.04x = 102,786.80 × 19,265.04
  4. Step 4: Simplify right side
    68,513.04x = 1,980,191,813.47
  5. Step 5: Solve for x
    x = 1,980,191,813.47/68,513.04
  6. Step 6: Final answer
    x = 28,902.41

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1.5x scale

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.