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Finding the Fourth Proportional to 57,888.32, 79,815.84 and 48,920

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Solution

The fourth proportional to 57,888.32, 79,815.84 and 48,920 is: 67,450.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,888.32 : 79,815.84 = 48,920 : x
  2. Step 2: Convert to fraction form
    57,888.32/79,815.84 = 48,920/x
  3. Step 3: Cross multiply
    57,888.32x = 79,815.84 × 48,920
  4. Step 4: Simplify right side
    57,888.32x = 3,904,590,892.80
  5. Step 5: Solve for x
    x = 3,904,590,892.80/57,888.32
  6. Step 6: Final answer
    x = 67,450.41

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.