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Finding the Fourth Proportional to 66,530.57, 91,811.54 and 36,316.08

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Solution

The fourth proportional to 66,530.57, 91,811.54 and 36,316.08 is: 50,115.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,530.57 : 91,811.54 = 36,316.08 : x
  2. Step 2: Convert to fraction form
    66,530.57/91,811.54 = 36,316.08/x
  3. Step 3: Cross multiply
    66,530.57x = 91,811.54 × 36,316.08
  4. Step 4: Simplify right side
    66,530.57x = 3,334,235,322.35
  5. Step 5: Solve for x
    x = 3,334,235,322.35/66,530.57
  6. Step 6: Final answer
    x = 50,115.84

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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.