Home / 84,359.40-126,587.70-31,806.60

Finding the Fourth Proportional to 84,359.40, 126,587.70 and 31,806.60

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Solution

The fourth proportional to 84,359.40, 126,587.70 and 31,806.60 is: 47,728.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,359.40 : 126,587.70 = 31,806.60 : x
  2. Step 2: Convert to fraction form
    84,359.40/126,587.70 = 31,806.60/x
  3. Step 3: Cross multiply
    84,359.40x = 126,587.70 × 31,806.60
  4. Step 4: Simplify right side
    84,359.40x = 4,026,324,338.82
  5. Step 5: Solve for x
    x = 4,026,324,338.82/84,359.40
  6. Step 6: Final answer
    x = 47,728.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.