Home / 78,209.08-107,930.21-44,215.54

Finding the Fourth Proportional to 78,209.08, 107,930.21 and 44,215.54

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Solution

The fourth proportional to 78,209.08, 107,930.21 and 44,215.54 is: 61,018.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,209.08 : 107,930.21 = 44,215.54 : x
  2. Step 2: Convert to fraction form
    78,209.08/107,930.21 = 44,215.54/x
  3. Step 3: Cross multiply
    78,209.08x = 107,930.21 × 44,215.54
  4. Step 4: Simplify right side
    78,209.08x = 4,772,192,026.56
  5. Step 5: Solve for x
    x = 4,772,192,026.56/78,209.08
  6. Step 6: Final answer
    x = 61,018.39

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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.