Home / 78,640.36-117,877.46-56,441.70

Finding the Fourth Proportional to 78,640.36, 117,877.46 and 56,441.70

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Solution

The fourth proportional to 78,640.36, 117,877.46 and 56,441.70 is: 84,602.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,640.36 : 117,877.46 = 56,441.70 : x
  2. Step 2: Convert to fraction form
    78,640.36/117,877.46 = 56,441.70/x
  3. Step 3: Cross multiply
    78,640.36x = 117,877.46 × 56,441.70
  4. Step 4: Simplify right side
    78,640.36x = 6,653,204,234.08
  5. Step 5: Solve for x
    x = 6,653,204,234.08/78,640.36
  6. Step 6: Final answer
    x = 84,602.92

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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.