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Finding the Fourth Proportional to 66,377.78, 91,559.48 and 39,500.22

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Solution

The fourth proportional to 66,377.78, 91,559.48 and 39,500.22 is: 54,485.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,377.78 : 91,559.48 = 39,500.22 : x
  2. Step 2: Convert to fraction form
    66,377.78/91,559.48 = 39,500.22/x
  3. Step 3: Cross multiply
    66,377.78x = 91,559.48 × 39,500.22
  4. Step 4: Simplify right side
    66,377.78x = 3,616,619,603.09
  5. Step 5: Solve for x
    x = 3,616,619,603.09/66,377.78
  6. Step 6: Final answer
    x = 54,485.40

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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.