Home / 66,512.24-91,798.60-39,656.40

Finding the Fourth Proportional to 66,512.24, 91,798.60 and 39,656.40

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Solution

The fourth proportional to 66,512.24, 91,798.60 and 39,656.40 is: 54,732.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,512.24 : 91,798.60 = 39,656.40 : x
  2. Step 2: Convert to fraction form
    66,512.24/91,798.60 = 39,656.40/x
  3. Step 3: Cross multiply
    66,512.24x = 91,798.60 × 39,656.40
  4. Step 4: Simplify right side
    66,512.24x = 3,640,402,001.04
  5. Step 5: Solve for x
    x = 3,640,402,001.04/66,512.24
  6. Step 6: Final answer
    x = 54,732.81

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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.