Home / 65,396.08-90,249.56-38,539.72

Finding the Fourth Proportional to 65,396.08, 90,249.56 and 38,539.72

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Solution

The fourth proportional to 65,396.08, 90,249.56 and 38,539.72 is: 53,186.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,396.08 : 90,249.56 = 38,539.72 : x
  2. Step 2: Convert to fraction form
    65,396.08/90,249.56 = 38,539.72/x
  3. Step 3: Cross multiply
    65,396.08x = 90,249.56 × 38,539.72
  4. Step 4: Simplify right side
    65,396.08x = 3,478,192,772.52
  5. Step 5: Solve for x
    x = 3,478,192,772.52/65,396.08
  6. Step 6: Final answer
    x = 53,186.56

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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.