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Finding the Fourth Proportional to 65,484.63, 90,379.66 and 38,633.74

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Solution

The fourth proportional to 65,484.63, 90,379.66 and 38,633.74 is: 53,320.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,484.63 : 90,379.66 = 38,633.74 : x
  2. Step 2: Convert to fraction form
    65,484.63/90,379.66 = 38,633.74/x
  3. Step 3: Cross multiply
    65,484.63x = 90,379.66 × 38,633.74
  4. Step 4: Simplify right side
    65,484.63x = 3,491,703,737.25
  5. Step 5: Solve for x
    x = 3,491,703,737.25/65,484.63
  6. Step 6: Final answer
    x = 53,320.97

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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.