Home / 78,350.93-117,395.63-75,435.38

Finding the Fourth Proportional to 78,350.93, 117,395.63 and 75,435.38

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Solution

The fourth proportional to 78,350.93, 117,395.63 and 75,435.38 is: 113,027.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,350.93 : 117,395.63 = 75,435.38 : x
  2. Step 2: Convert to fraction form
    78,350.93/117,395.63 = 75,435.38/x
  3. Step 3: Cross multiply
    78,350.93x = 117,395.63 × 75,435.38
  4. Step 4: Simplify right side
    78,350.93x = 8,855,783,959.39
  5. Step 5: Solve for x
    x = 8,855,783,959.39/78,350.93
  6. Step 6: Final answer
    x = 113,027.17

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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.