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Finding the Fourth Proportional to 68,656.10, 102,999.65 and 37,065.47

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Solution

The fourth proportional to 68,656.10, 102,999.65 and 37,065.47 is: 55,606.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,656.10 : 102,999.65 = 37,065.47 : x
  2. Step 2: Convert to fraction form
    68,656.10/102,999.65 = 37,065.47/x
  3. Step 3: Cross multiply
    68,656.10x = 102,999.65 × 37,065.47
  4. Step 4: Simplify right side
    68,656.10x = 3,817,729,736.76
  5. Step 5: Solve for x
    x = 3,817,729,736.76/68,656.10
  6. Step 6: Final answer
    x = 55,606.57

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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.