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Finding the Fourth Proportional to 66,003.74, 91,051.91 and 47,151.80

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Solution

The fourth proportional to 66,003.74, 91,051.91 and 47,151.80 is: 65,045.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,003.74 : 91,051.91 = 47,151.80 : x
  2. Step 2: Convert to fraction form
    66,003.74/91,051.91 = 47,151.80/x
  3. Step 3: Cross multiply
    66,003.74x = 91,051.91 × 47,151.80
  4. Step 4: Simplify right side
    66,003.74x = 4,293,261,449.94
  5. Step 5: Solve for x
    x = 4,293,261,449.94/66,003.74
  6. Step 6: Final answer
    x = 65,045.73

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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.