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Finding the Fourth Proportional to 68,337.78, 102,417.21 and 36,710.87

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Solution

The fourth proportional to 68,337.78, 102,417.21 and 36,710.87 is: 55,018.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,337.78 : 102,417.21 = 36,710.87 : x
  2. Step 2: Convert to fraction form
    68,337.78/102,417.21 = 36,710.87/x
  3. Step 3: Cross multiply
    68,337.78x = 102,417.21 × 36,710.87
  4. Step 4: Simplify right side
    68,337.78x = 3,759,825,184.00
  5. Step 5: Solve for x
    x = 3,759,825,184.00/68,337.78
  6. Step 6: Final answer
    x = 55,018.25

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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.