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Finding the Fourth Proportional to 60,345.86, 90,524.96 and 20,902.90

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Solution

The fourth proportional to 60,345.86, 90,524.96 and 20,902.90 is: 31,356.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,345.86 : 90,524.96 = 20,902.90 : x
  2. Step 2: Convert to fraction form
    60,345.86/90,524.96 = 20,902.90/x
  3. Step 3: Cross multiply
    60,345.86x = 90,524.96 × 20,902.90
  4. Step 4: Simplify right side
    60,345.86x = 1,892,234,081.87
  5. Step 5: Solve for x
    x = 1,892,234,081.87/60,345.86
  6. Step 6: Final answer
    x = 31,356.49

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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.