Home / 91,327.32-125,881.11-61,101.81

Finding the Fourth Proportional to 91,327.32, 125,881.11 and 61,101.81

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Solution

The fourth proportional to 91,327.32, 125,881.11 and 61,101.81 is: 84,219.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,327.32 : 125,881.11 = 61,101.81 : x
  2. Step 2: Convert to fraction form
    91,327.32/125,881.11 = 61,101.81/x
  3. Step 3: Cross multiply
    91,327.32x = 125,881.11 × 61,101.81
  4. Step 4: Simplify right side
    91,327.32x = 7,691,563,665.81
  5. Step 5: Solve for x
    x = 7,691,563,665.81/91,327.32
  6. Step 6: Final answer
    x = 84,219.75

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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.