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Finding the Fourth Proportional to 66,345.83, 91,559.67 and 36,129.70

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Solution

The fourth proportional to 66,345.83, 91,559.67 and 36,129.70 is: 49,860.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,345.83 : 91,559.67 = 36,129.70 : x
  2. Step 2: Convert to fraction form
    66,345.83/91,559.67 = 36,129.70/x
  3. Step 3: Cross multiply
    66,345.83x = 91,559.67 × 36,129.70
  4. Step 4: Simplify right side
    66,345.83x = 3,308,022,873.14
  5. Step 5: Solve for x
    x = 3,308,022,873.14/66,345.83
  6. Step 6: Final answer
    x = 49,860.29

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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.