Home / 81,666.23-112,695.91-47,676.60

Finding the Fourth Proportional to 81,666.23, 112,695.91 and 47,676.60

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Solution

The fourth proportional to 81,666.23, 112,695.91 and 47,676.60 is: 65,791.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,666.23 : 112,695.91 = 47,676.60 : x
  2. Step 2: Convert to fraction form
    81,666.23/112,695.91 = 47,676.60/x
  3. Step 3: Cross multiply
    81,666.23x = 112,695.91 × 47,676.60
  4. Step 4: Simplify right side
    81,666.23x = 5,372,957,703.51
  5. Step 5: Solve for x
    x = 5,372,957,703.51/81,666.23
  6. Step 6: Final answer
    x = 65,791.67

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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.