Home / 52,115.07-78,172.60-12,671.92

Finding the Fourth Proportional to 52,115.07, 78,172.60 and 12,671.92

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Solution

The fourth proportional to 52,115.07, 78,172.60 and 12,671.92 is: 19,007.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,115.07 : 78,172.60 = 12,671.92 : x
  2. Step 2: Convert to fraction form
    52,115.07/78,172.60 = 12,671.92/x
  3. Step 3: Cross multiply
    52,115.07x = 78,172.60 × 12,671.92
  4. Step 4: Simplify right side
    52,115.07x = 990,596,933.39
  5. Step 5: Solve for x
    x = 990,596,933.39/52,115.07
  6. Step 6: Final answer
    x = 19,007.88

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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.