Home / 78,511.72-117,674.16-36,332.86

Finding the Fourth Proportional to 78,511.72, 117,674.16 and 36,332.86

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Solution

The fourth proportional to 78,511.72, 117,674.16 and 36,332.86 is: 54,456.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,511.72 : 117,674.16 = 36,332.86 : x
  2. Step 2: Convert to fraction form
    78,511.72/117,674.16 = 36,332.86/x
  3. Step 3: Cross multiply
    78,511.72x = 117,674.16 × 36,332.86
  4. Step 4: Simplify right side
    78,511.72x = 4,275,438,780.90
  5. Step 5: Solve for x
    x = 4,275,438,780.90/78,511.72
  6. Step 6: Final answer
    x = 54,456.06

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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.