Home / 42,572.68-63,855.08-20,078.20

Finding the Fourth Proportional to 42,572.68, 63,855.08 and 20,078.20

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Solution

The fourth proportional to 42,572.68, 63,855.08 and 20,078.20 is: 30,115.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,572.68 : 63,855.08 = 20,078.20 : x
  2. Step 2: Convert to fraction form
    42,572.68/63,855.08 = 20,078.20/x
  3. Step 3: Cross multiply
    42,572.68x = 63,855.08 × 20,078.20
  4. Step 4: Simplify right side
    42,572.68x = 1,282,095,067.26
  5. Step 5: Solve for x
    x = 1,282,095,067.26/42,572.68
  6. Step 6: Final answer
    x = 30,115.44

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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.