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Finding the Fourth Proportional to 84,850.59, 126,655.60 and 78,683.07

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Solution

The fourth proportional to 84,850.59, 126,655.60 and 78,683.07 is: 117,449.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,850.59 : 126,655.60 = 78,683.07 : x
  2. Step 2: Convert to fraction form
    84,850.59/126,655.60 = 78,683.07/x
  3. Step 3: Cross multiply
    84,850.59x = 126,655.60 × 78,683.07
  4. Step 4: Simplify right side
    84,850.59x = 9,965,651,243.98
  5. Step 5: Solve for x
    x = 9,965,651,243.98/84,850.59
  6. Step 6: Final answer
    x = 117,449.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.