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Finding the Fourth Proportional to 65,471.07, 90,347.16 and 38,249.68

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Solution

The fourth proportional to 65,471.07, 90,347.16 and 38,249.68 is: 52,782.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,471.07 : 90,347.16 = 38,249.68 : x
  2. Step 2: Convert to fraction form
    65,471.07/90,347.16 = 38,249.68/x
  3. Step 3: Cross multiply
    65,471.07x = 90,347.16 × 38,249.68
  4. Step 4: Simplify right side
    65,471.07x = 3,455,749,958.91
  5. Step 5: Solve for x
    x = 3,455,749,958.91/65,471.07
  6. Step 6: Final answer
    x = 52,782.85

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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.