Home / 42,087.99-63,115.52-15,778.38

Finding the Fourth Proportional to 42,087.99, 63,115.52 and 15,778.38

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Solution

The fourth proportional to 42,087.99, 63,115.52 and 15,778.38 is: 23,661.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,087.99 : 63,115.52 = 15,778.38 : x
  2. Step 2: Convert to fraction form
    42,087.99/63,115.52 = 15,778.38/x
  3. Step 3: Cross multiply
    42,087.99x = 63,115.52 × 15,778.38
  4. Step 4: Simplify right side
    42,087.99x = 995,860,579.57
  5. Step 5: Solve for x
    x = 995,860,579.57/42,087.99
  6. Step 6: Final answer
    x = 23,661.40

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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.