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Finding the Fourth Proportional to 68,000.68, 93,756.58 and 45,289.90

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Solution

The fourth proportional to 68,000.68, 93,756.58 and 45,289.90 is: 62,443.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,000.68 : 93,756.58 = 45,289.90 : x
  2. Step 2: Convert to fraction form
    68,000.68/93,756.58 = 45,289.90/x
  3. Step 3: Cross multiply
    68,000.68x = 93,756.58 × 45,289.90
  4. Step 4: Simplify right side
    68,000.68x = 4,246,226,132.54
  5. Step 5: Solve for x
    x = 4,246,226,132.54/68,000.68
  6. Step 6: Final answer
    x = 62,443.88

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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.