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Finding the Fourth Proportional to 60,380.32, 90,564.72 and 18,804.64

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Solution

The fourth proportional to 60,380.32, 90,564.72 and 18,804.64 is: 28,205.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,380.32 : 90,564.72 = 18,804.64 : x
  2. Step 2: Convert to fraction form
    60,380.32/90,564.72 = 18,804.64/x
  3. Step 3: Cross multiply
    60,380.32x = 90,564.72 × 18,804.64
  4. Step 4: Simplify right side
    60,380.32x = 1,703,036,956.30
  5. Step 5: Solve for x
    x = 1,703,036,956.30/60,380.32
  6. Step 6: Final answer
    x = 28,205.17

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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.