Home / 56,172.84-84,231.05-18,719.79

Finding the Fourth Proportional to 56,172.84, 84,231.05 and 18,719.79

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Solution

The fourth proportional to 56,172.84, 84,231.05 and 18,719.79 is: 28,070.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,172.84 : 84,231.05 = 18,719.79 : x
  2. Step 2: Convert to fraction form
    56,172.84/84,231.05 = 18,719.79/x
  3. Step 3: Cross multiply
    56,172.84x = 84,231.05 × 18,719.79
  4. Step 4: Simplify right side
    56,172.84x = 1,576,787,473.88
  5. Step 5: Solve for x
    x = 1,576,787,473.88/56,172.84
  6. Step 6: Final answer
    x = 28,070.28

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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.