Home / 66,395.09-91,617.50-40,540.63

Finding the Fourth Proportional to 66,395.09, 91,617.50 and 40,540.63

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Solution

The fourth proportional to 66,395.09, 91,617.50 and 40,540.63 is: 55,941.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,395.09 : 91,617.50 = 40,540.63 : x
  2. Step 2: Convert to fraction form
    66,395.09/91,617.50 = 40,540.63/x
  3. Step 3: Cross multiply
    66,395.09x = 91,617.50 × 40,540.63
  4. Step 4: Simplify right side
    66,395.09x = 3,714,230,966.32
  5. Step 5: Solve for x
    x = 3,714,230,966.32/66,395.09
  6. Step 6: Final answer
    x = 55,941.35

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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.