Home / 81,365.45-112,283.08-45,556.70

Finding the Fourth Proportional to 81,365.45, 112,283.08 and 45,556.70

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Solution

The fourth proportional to 81,365.45, 112,283.08 and 45,556.70 is: 62,867.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,365.45 : 112,283.08 = 45,556.70 : x
  2. Step 2: Convert to fraction form
    81,365.45/112,283.08 = 45,556.70/x
  3. Step 3: Cross multiply
    81,365.45x = 112,283.08 × 45,556.70
  4. Step 4: Simplify right side
    81,365.45x = 5,115,245,915.33
  5. Step 5: Solve for x
    x = 5,115,245,915.33/81,365.45
  6. Step 6: Final answer
    x = 62,867.55

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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.