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Finding the Fourth Proportional to 56,115.65, 84,157.90 and 15,579.85

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Solution

The fourth proportional to 56,115.65, 84,157.90 and 15,579.85 is: 23,365.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,115.65 : 84,157.90 = 15,579.85 : x
  2. Step 2: Convert to fraction form
    56,115.65/84,157.90 = 15,579.85/x
  3. Step 3: Cross multiply
    56,115.65x = 84,157.90 × 15,579.85
  4. Step 4: Simplify right side
    56,115.65x = 1,311,166,959.63
  5. Step 5: Solve for x
    x = 1,311,166,959.63/56,115.65
  6. Step 6: Final answer
    x = 23,365.44

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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.