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Finding the Fourth Proportional to 60,517.96, 90,709.68 and 45,678.76

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Solution

The fourth proportional to 60,517.96, 90,709.68 and 45,678.76 is: 68,467.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,517.96 : 90,709.68 = 45,678.76 : x
  2. Step 2: Convert to fraction form
    60,517.96/90,709.68 = 45,678.76/x
  3. Step 3: Cross multiply
    60,517.96x = 90,709.68 × 45,678.76
  4. Step 4: Simplify right side
    60,517.96x = 4,143,505,702.40
  5. Step 5: Solve for x
    x = 4,143,505,702.40/60,517.96
  6. Step 6: Final answer
    x = 68,467.37

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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.