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Finding the Fourth Proportional to 60,345.61, 90,524.58 and 20,902.65

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Solution

The fourth proportional to 60,345.61, 90,524.58 and 20,902.65 is: 31,356.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,345.61 : 90,524.58 = 20,902.65 : x
  2. Step 2: Convert to fraction form
    60,345.61/90,524.58 = 20,902.65/x
  3. Step 3: Cross multiply
    60,345.61x = 90,524.58 × 20,902.65
  4. Step 4: Simplify right side
    60,345.61x = 1,892,203,612.14
  5. Step 5: Solve for x
    x = 1,892,203,612.14/60,345.61
  6. Step 6: Final answer
    x = 31,356.11

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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.