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Finding the Fourth Proportional to 66,116.80, 91,241.08 and 36,308.80

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Solution

The fourth proportional to 66,116.80, 91,241.08 and 36,308.80 is: 50,106.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,116.80 : 91,241.08 = 36,308.80 : x
  2. Step 2: Convert to fraction form
    66,116.80/91,241.08 = 36,308.80/x
  3. Step 3: Cross multiply
    66,116.80x = 91,241.08 × 36,308.80
  4. Step 4: Simplify right side
    66,116.80x = 3,312,854,125.50
  5. Step 5: Solve for x
    x = 3,312,854,125.50/66,116.80
  6. Step 6: Final answer
    x = 50,106.09

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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.