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Finding the Fourth Proportional to 68,009.10, 102,013.65 and 36,516.30

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Solution

The fourth proportional to 68,009.10, 102,013.65 and 36,516.30 is: 54,774.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,009.10 : 102,013.65 = 36,516.30 : x
  2. Step 2: Convert to fraction form
    68,009.10/102,013.65 = 36,516.30/x
  3. Step 3: Cross multiply
    68,009.10x = 102,013.65 × 36,516.30
  4. Step 4: Simplify right side
    68,009.10x = 3,725,161,047.50
  5. Step 5: Solve for x
    x = 3,725,161,047.50/68,009.10
  6. Step 6: Final answer
    x = 54,774.45

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1.5x scale

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.