Home / 77,611.11-107,112.21-43,159.28

Finding the Fourth Proportional to 77,611.11, 107,112.21 and 43,159.28

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Solution

The fourth proportional to 77,611.11, 107,112.21 and 43,159.28 is: 59,564.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,611.11 : 107,112.21 = 43,159.28 : x
  2. Step 2: Convert to fraction form
    77,611.11/107,112.21 = 43,159.28/x
  3. Step 3: Cross multiply
    77,611.11x = 107,112.21 × 43,159.28
  4. Step 4: Simplify right side
    77,611.11x = 4,622,885,327.25
  5. Step 5: Solve for x
    x = 4,622,885,327.25/77,611.11
  6. Step 6: Final answer
    x = 59,564.74

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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.