Home / 78,749.18-117,992.27-55,333.70

Finding the Fourth Proportional to 78,749.18, 117,992.27 and 55,333.70

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Solution

The fourth proportional to 78,749.18, 117,992.27 and 55,333.70 is: 82,908.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,749.18 : 117,992.27 = 55,333.70 : x
  2. Step 2: Convert to fraction form
    78,749.18/117,992.27 = 55,333.70/x
  3. Step 3: Cross multiply
    78,749.18x = 117,992.27 × 55,333.70
  4. Step 4: Simplify right side
    78,749.18x = 6,528,948,870.50
  5. Step 5: Solve for x
    x = 6,528,948,870.50/78,749.18
  6. Step 6: Final answer
    x = 82,908.15

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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.