Home / 78,778.07-118,215.50-41,364.98

Finding the Fourth Proportional to 78,778.07, 118,215.50 and 41,364.98

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Solution

The fourth proportional to 78,778.07, 118,215.50 and 41,364.98 is: 62,072.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,778.07 : 118,215.50 = 41,364.98 : x
  2. Step 2: Convert to fraction form
    78,778.07/118,215.50 = 41,364.98/x
  3. Step 3: Cross multiply
    78,778.07x = 118,215.50 × 41,364.98
  4. Step 4: Simplify right side
    78,778.07x = 4,889,981,671.27
  5. Step 5: Solve for x
    x = 4,889,981,671.27/78,778.07
  6. Step 6: Final answer
    x = 62,072.88

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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.