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Finding the Fourth Proportional to 68,624.47, 102,742.57 and 43,602.49

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Solution

The fourth proportional to 68,624.47, 102,742.57 and 43,602.49 is: 65,280.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,624.47 : 102,742.57 = 43,602.49 : x
  2. Step 2: Convert to fraction form
    68,624.47/102,742.57 = 43,602.49/x
  3. Step 3: Cross multiply
    68,624.47x = 102,742.57 × 43,602.49
  4. Step 4: Simplify right side
    68,624.47x = 4,479,831,881.00
  5. Step 5: Solve for x
    x = 4,479,831,881.00/68,624.47
  6. Step 6: Final answer
    x = 65,280.39

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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.