Home / 66,379.35-91,593.21-38,079.57

Finding the Fourth Proportional to 66,379.35, 91,593.21 and 38,079.57

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Solution

The fourth proportional to 66,379.35, 91,593.21 and 38,079.57 is: 52,543.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,379.35 : 91,593.21 = 38,079.57 : x
  2. Step 2: Convert to fraction form
    66,379.35/91,593.21 = 38,079.57/x
  3. Step 3: Cross multiply
    66,379.35x = 91,593.21 × 38,079.57
  4. Step 4: Simplify right side
    66,379.35x = 3,487,830,051.72
  5. Step 5: Solve for x
    x = 3,487,830,051.72/66,379.35
  6. Step 6: Final answer
    x = 52,543.90

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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.