Home / 78,823.48-108,778.72-43,015.80

Finding the Fourth Proportional to 78,823.48, 108,778.72 and 43,015.80

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Solution

The fourth proportional to 78,823.48, 108,778.72 and 43,015.80 is: 59,363.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,823.48 : 108,778.72 = 43,015.80 : x
  2. Step 2: Convert to fraction form
    78,823.48/108,778.72 = 43,015.80/x
  3. Step 3: Cross multiply
    78,823.48x = 108,778.72 × 43,015.80
  4. Step 4: Simplify right side
    78,823.48x = 4,679,203,828.18
  5. Step 5: Solve for x
    x = 4,679,203,828.18/78,823.48
  6. Step 6: Final answer
    x = 59,363.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.