Home / 78,823.05-108,778.12-43,015.37

Finding the Fourth Proportional to 78,823.05, 108,778.12 and 43,015.37

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Solution

The fourth proportional to 78,823.05, 108,778.12 and 43,015.37 is: 59,362.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,823.05 : 108,778.12 = 43,015.37 : x
  2. Step 2: Convert to fraction form
    78,823.05/108,778.12 = 43,015.37/x
  3. Step 3: Cross multiply
    78,823.05x = 108,778.12 × 43,015.37
  4. Step 4: Simplify right side
    78,823.05x = 4,679,130,320.74
  5. Step 5: Solve for x
    x = 4,679,130,320.74/78,823.05
  6. Step 6: Final answer
    x = 59,362.47

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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.