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Finding the Fourth Proportional to 87,907.80, 131,861.70 and 46,435.80

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Solution

The fourth proportional to 87,907.80, 131,861.70 and 46,435.80 is: 69,653.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,907.80 : 131,861.70 = 46,435.80 : x
  2. Step 2: Convert to fraction form
    87,907.80/131,861.70 = 46,435.80/x
  3. Step 3: Cross multiply
    87,907.80x = 131,861.70 × 46,435.80
  4. Step 4: Simplify right side
    87,907.80x = 6,123,103,528.86
  5. Step 5: Solve for x
    x = 6,123,103,528.86/87,907.80
  6. Step 6: Final answer
    x = 69,653.70

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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.