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Finding the Fourth Proportional to 69,810.17, 104,758.99 and 28,257.17

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Solution

The fourth proportional to 69,810.17, 104,758.99 and 28,257.17 is: 42,403.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,810.17 : 104,758.99 = 28,257.17 : x
  2. Step 2: Convert to fraction form
    69,810.17/104,758.99 = 28,257.17/x
  3. Step 3: Cross multiply
    69,810.17x = 104,758.99 × 28,257.17
  4. Step 4: Simplify right side
    69,810.17x = 2,960,191,995.02
  5. Step 5: Solve for x
    x = 2,960,191,995.02/69,810.17
  6. Step 6: Final answer
    x = 42,403.45

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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.