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Finding the Fourth Proportional to 68,509.65, 102,752.35 and 18,593.63

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Solution

The fourth proportional to 68,509.65, 102,752.35 and 18,593.63 is: 27,887.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,509.65 : 102,752.35 = 18,593.63 : x
  2. Step 2: Convert to fraction form
    68,509.65/102,752.35 = 18,593.63/x
  3. Step 3: Cross multiply
    68,509.65x = 102,752.35 × 18,593.63
  4. Step 4: Simplify right side
    68,509.65x = 1,910,539,580.59
  5. Step 5: Solve for x
    x = 1,910,539,580.59/68,509.65
  6. Step 6: Final answer
    x = 27,887.16

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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.