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Finding the Fourth Proportional to 69,621.96, 96,078.42 and 37,790.88

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Solution

The fourth proportional to 69,621.96, 96,078.42 and 37,790.88 is: 52,151.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,621.96 : 96,078.42 = 37,790.88 : x
  2. Step 2: Convert to fraction form
    69,621.96/96,078.42 = 37,790.88/x
  3. Step 3: Cross multiply
    69,621.96x = 96,078.42 × 37,790.88
  4. Step 4: Simplify right side
    69,621.96x = 3,630,888,040.81
  5. Step 5: Solve for x
    x = 3,630,888,040.81/69,621.96
  6. Step 6: Final answer
    x = 52,151.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.