Home / 52,124.12-78,132.47-20,521.37

Finding the Fourth Proportional to 52,124.12, 78,132.47 and 20,521.37

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Solution

The fourth proportional to 52,124.12, 78,132.47 and 20,521.37 is: 30,760.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,124.12 : 78,132.47 = 20,521.37 : x
  2. Step 2: Convert to fraction form
    52,124.12/78,132.47 = 20,521.37/x
  3. Step 3: Cross multiply
    52,124.12x = 78,132.47 × 20,521.37
  4. Step 4: Simplify right side
    52,124.12x = 1,603,384,979.11
  5. Step 5: Solve for x
    x = 1,603,384,979.11/52,124.12
  6. Step 6: Final answer
    x = 30,760.90

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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.