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Finding the Fourth Proportional to 56,379.72, 84,529.56 and 28,279.56

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Solution

The fourth proportional to 56,379.72, 84,529.56 and 28,279.56 is: 42,399.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,379.72 : 84,529.56 = 28,279.56 : x
  2. Step 2: Convert to fraction form
    56,379.72/84,529.56 = 28,279.56/x
  3. Step 3: Cross multiply
    56,379.72x = 84,529.56 × 28,279.56
  4. Step 4: Simplify right side
    56,379.72x = 2,390,458,763.79
  5. Step 5: Solve for x
    x = 2,390,458,763.79/56,379.72
  6. Step 6: Final answer
    x = 42,399.27

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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.