Home / 70,821.96-97,732.40-38,991.09

Finding the Fourth Proportional to 70,821.96, 97,732.40 and 38,991.09

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Solution

The fourth proportional to 70,821.96, 97,732.40 and 38,991.09 is: 53,806.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,821.96 : 97,732.40 = 38,991.09 : x
  2. Step 2: Convert to fraction form
    70,821.96/97,732.40 = 38,991.09/x
  3. Step 3: Cross multiply
    70,821.96x = 97,732.40 × 38,991.09
  4. Step 4: Simplify right side
    70,821.96x = 3,810,692,804.32
  5. Step 5: Solve for x
    x = 3,810,692,804.32/70,821.96
  6. Step 6: Final answer
    x = 53,806.66

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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.