Home / 71,688.58-98,930.01-39,857.47

Finding the Fourth Proportional to 71,688.58, 98,930.01 and 39,857.47

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Solution

The fourth proportional to 71,688.58, 98,930.01 and 39,857.47 is: 55,003.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,688.58 : 98,930.01 = 39,857.47 : x
  2. Step 2: Convert to fraction form
    71,688.58/98,930.01 = 39,857.47/x
  3. Step 3: Cross multiply
    71,688.58x = 98,930.01 × 39,857.47
  4. Step 4: Simplify right side
    71,688.58x = 3,943,099,905.67
  5. Step 5: Solve for x
    x = 3,943,099,905.67/71,688.58
  6. Step 6: Final answer
    x = 55,003.18

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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.