Home / 81,339.58-112,215.54-51,115.24

Finding the Fourth Proportional to 81,339.58, 112,215.54 and 51,115.24

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Solution

The fourth proportional to 81,339.58, 112,215.54 and 51,115.24 is: 70,518.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,339.58 : 112,215.54 = 51,115.24 : x
  2. Step 2: Convert to fraction form
    81,339.58/112,215.54 = 51,115.24/x
  3. Step 3: Cross multiply
    81,339.58x = 112,215.54 × 51,115.24
  4. Step 4: Simplify right side
    81,339.58x = 5,735,924,258.83
  5. Step 5: Solve for x
    x = 5,735,924,258.83/81,339.58
  6. Step 6: Final answer
    x = 70,518.24

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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.