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Finding the Fourth Proportional to 68,240.62, 102,359.72 and 28,798.08

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Solution

The fourth proportional to 68,240.62, 102,359.72 and 28,798.08 is: 43,196.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,240.62 : 102,359.72 = 28,798.08 : x
  2. Step 2: Convert to fraction form
    68,240.62/102,359.72 = 28,798.08/x
  3. Step 3: Cross multiply
    68,240.62x = 102,359.72 × 28,798.08
  4. Step 4: Simplify right side
    68,240.62x = 2,947,762,931.49
  5. Step 5: Solve for x
    x = 2,947,762,931.49/68,240.62
  6. Step 6: Final answer
    x = 43,196.60

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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.