Home / 78,267.77-107,928.33-66,974.64

Finding the Fourth Proportional to 78,267.77, 107,928.33 and 66,974.64

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Solution

The fourth proportional to 78,267.77, 107,928.33 and 66,974.64 is: 92,355.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,267.77 : 107,928.33 = 66,974.64 : x
  2. Step 2: Convert to fraction form
    78,267.77/107,928.33 = 66,974.64/x
  3. Step 3: Cross multiply
    78,267.77x = 107,928.33 × 66,974.64
  4. Step 4: Simplify right side
    78,267.77x = 7,228,461,047.55
  5. Step 5: Solve for x
    x = 7,228,461,047.55/78,267.77
  6. Step 6: Final answer
    x = 92,355.53

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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.