Home / 57,011.76-78,676.44-31,861.68

Finding the Fourth Proportional to 57,011.76, 78,676.44 and 31,861.68

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Solution

The fourth proportional to 57,011.76, 78,676.44 and 31,861.68 is: 43,969.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,011.76 : 78,676.44 = 31,861.68 : x
  2. Step 2: Convert to fraction form
    57,011.76/78,676.44 = 31,861.68/x
  3. Step 3: Cross multiply
    57,011.76x = 78,676.44 × 31,861.68
  4. Step 4: Simplify right side
    57,011.76x = 2,506,763,554.82
  5. Step 5: Solve for x
    x = 2,506,763,554.82/57,011.76
  6. Step 6: Final answer
    x = 43,969.24

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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.