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Finding the Fourth Proportional to 65,562.93, 90,472.19 and 38,704.05

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Solution

The fourth proportional to 65,562.93, 90,472.19 and 38,704.05 is: 53,408.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,562.93 : 90,472.19 = 38,704.05 : x
  2. Step 2: Convert to fraction form
    65,562.93/90,472.19 = 38,704.05/x
  3. Step 3: Cross multiply
    65,562.93x = 90,472.19 × 38,704.05
  4. Step 4: Simplify right side
    65,562.93x = 3,501,639,971.85
  5. Step 5: Solve for x
    x = 3,501,639,971.85/65,562.93
  6. Step 6: Final answer
    x = 53,408.84

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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.