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Finding the Fourth Proportional to 70,580.87, 105,777.85 and 51,772.85

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Solution

The fourth proportional to 70,580.87, 105,777.85 and 51,772.85 is: 77,590.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,580.87 : 105,777.85 = 51,772.85 : x
  2. Step 2: Convert to fraction form
    70,580.87/105,777.85 = 51,772.85/x
  3. Step 3: Cross multiply
    70,580.87x = 105,777.85 × 51,772.85
  4. Step 4: Simplify right side
    70,580.87x = 5,476,420,299.29
  5. Step 5: Solve for x
    x = 5,476,420,299.29/70,580.87
  6. Step 6: Final answer
    x = 77,590.72

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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.