Home / 66,514.24-91,801.36-39,658.40

Finding the Fourth Proportional to 66,514.24, 91,801.36 and 39,658.40

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Solution

The fourth proportional to 66,514.24, 91,801.36 and 39,658.40 is: 54,735.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,514.24 : 91,801.36 = 39,658.40 : x
  2. Step 2: Convert to fraction form
    66,514.24/91,801.36 = 39,658.40/x
  3. Step 3: Cross multiply
    66,514.24x = 91,801.36 × 39,658.40
  4. Step 4: Simplify right side
    66,514.24x = 3,640,695,055.42
  5. Step 5: Solve for x
    x = 3,640,695,055.42/66,514.24
  6. Step 6: Final answer
    x = 54,735.57

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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.