Home / 85,481.10-117,980.22-56,358.34

Finding the Fourth Proportional to 85,481.10, 117,980.22 and 56,358.34

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Solution

The fourth proportional to 85,481.10, 117,980.22 and 56,358.34 is: 77,785.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,481.10 : 117,980.22 = 56,358.34 : x
  2. Step 2: Convert to fraction form
    85,481.10/117,980.22 = 56,358.34/x
  3. Step 3: Cross multiply
    85,481.10x = 117,980.22 × 56,358.34
  4. Step 4: Simplify right side
    85,481.10x = 6,649,168,819.58
  5. Step 5: Solve for x
    x = 6,649,168,819.58/85,481.10
  6. Step 6: Final answer
    x = 77,785.25

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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.