Home / 78,622.43-117,835.21-61,916.50

Finding the Fourth Proportional to 78,622.43, 117,835.21 and 61,916.50

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Solution

The fourth proportional to 78,622.43, 117,835.21 and 61,916.50 is: 92,797.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,622.43 : 117,835.21 = 61,916.50 : x
  2. Step 2: Convert to fraction form
    78,622.43/117,835.21 = 61,916.50/x
  3. Step 3: Cross multiply
    78,622.43x = 117,835.21 × 61,916.50
  4. Step 4: Simplify right side
    78,622.43x = 7,295,942,881.21
  5. Step 5: Solve for x
    x = 7,295,942,881.21/78,622.43
  6. Step 6: Final answer
    x = 92,797.22

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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.