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Finding the Fourth Proportional to 66,140.58, 91,223.97 and 45,987.37

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Solution

The fourth proportional to 66,140.58, 91,223.97 and 45,987.37 is: 63,427.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,140.58 : 91,223.97 = 45,987.37 : x
  2. Step 2: Convert to fraction form
    66,140.58/91,223.97 = 45,987.37/x
  3. Step 3: Cross multiply
    66,140.58x = 91,223.97 × 45,987.37
  4. Step 4: Simplify right side
    66,140.58x = 4,195,150,461.26
  5. Step 5: Solve for x
    x = 4,195,150,461.26/66,140.58
  6. Step 6: Final answer
    x = 63,427.78

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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.