Home / 52,087.42-78,131.62-12,644.88

Finding the Fourth Proportional to 52,087.42, 78,131.62 and 12,644.88

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Solution

The fourth proportional to 52,087.42, 78,131.62 and 12,644.88 is: 18,967.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,087.42 : 78,131.62 = 12,644.88 : x
  2. Step 2: Convert to fraction form
    52,087.42/78,131.62 = 12,644.88/x
  3. Step 3: Cross multiply
    52,087.42x = 78,131.62 × 12,644.88
  4. Step 4: Simplify right side
    52,087.42x = 987,964,959.11
  5. Step 5: Solve for x
    x = 987,964,959.11/52,087.42
  6. Step 6: Final answer
    x = 18,967.44

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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.