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Finding the Fourth Proportional to 62,776, 86,638.58 and 36,280

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Solution

The fourth proportional to 62,776, 86,638.58 and 36,280 is: 50,070.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,776 : 86,638.58 = 36,280 : x
  2. Step 2: Convert to fraction form
    62,776/86,638.58 = 36,280/x
  3. Step 3: Cross multiply
    62,776x = 86,638.58 × 36,280
  4. Step 4: Simplify right side
    62,776x = 3,143,247,682.40
  5. Step 5: Solve for x
    x = 3,143,247,682.40/62,776
  6. Step 6: Final answer
    x = 50,070.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.