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Finding the Fourth Proportional to 68,411.80, 102,617.70 and 37,307.80

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Solution

The fourth proportional to 68,411.80, 102,617.70 and 37,307.80 is: 55,961.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,411.80 : 102,617.70 = 37,307.80 : x
  2. Step 2: Convert to fraction form
    68,411.80/102,617.70 = 37,307.80/x
  3. Step 3: Cross multiply
    68,411.80x = 102,617.70 × 37,307.80
  4. Step 4: Simplify right side
    68,411.80x = 3,828,440,628.06
  5. Step 5: Solve for x
    x = 3,828,440,628.06/68,411.80
  6. Step 6: Final answer
    x = 55,961.70

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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.