Home / 78,450.27-108,262.22-42,640.30

Finding the Fourth Proportional to 78,450.27, 108,262.22 and 42,640.30

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Solution

The fourth proportional to 78,450.27, 108,262.22 and 42,640.30 is: 58,844.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,450.27 : 108,262.22 = 42,640.30 : x
  2. Step 2: Convert to fraction form
    78,450.27/108,262.22 = 42,640.30/x
  3. Step 3: Cross multiply
    78,450.27x = 108,262.22 × 42,640.30
  4. Step 4: Simplify right side
    78,450.27x = 4,616,333,539.47
  5. Step 5: Solve for x
    x = 4,616,333,539.47/78,450.27
  6. Step 6: Final answer
    x = 58,844.07

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1.5x scale

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.