Home / 66,132.81-91,201.56-51,001.20

Finding the Fourth Proportional to 66,132.81, 91,201.56 and 51,001.20

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Solution

The fourth proportional to 66,132.81, 91,201.56 and 51,001.20 is: 70,334.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,132.81 : 91,201.56 = 51,001.20 : x
  2. Step 2: Convert to fraction form
    66,132.81/91,201.56 = 51,001.20/x
  3. Step 3: Cross multiply
    66,132.81x = 91,201.56 × 51,001.20
  4. Step 4: Simplify right side
    66,132.81x = 4,651,389,001.87
  5. Step 5: Solve for x
    x = 4,651,389,001.87/66,132.81
  6. Step 6: Final answer
    x = 70,334.06

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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.