Home / 78,455.16-117,591.48-36,246.60

Finding the Fourth Proportional to 78,455.16, 117,591.48 and 36,246.60

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Solution

The fourth proportional to 78,455.16, 117,591.48 and 36,246.60 is: 54,327.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,455.16 : 117,591.48 = 36,246.60 : x
  2. Step 2: Convert to fraction form
    78,455.16/117,591.48 = 36,246.60/x
  3. Step 3: Cross multiply
    78,455.16x = 117,591.48 × 36,246.60
  4. Step 4: Simplify right side
    78,455.16x = 4,262,291,338.97
  5. Step 5: Solve for x
    x = 4,262,291,338.97/78,455.16
  6. Step 6: Final answer
    x = 54,327.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.