Home / 65,905.40-98,723.70-40,868.60

Finding the Fourth Proportional to 65,905.40, 98,723.70 and 40,868.60

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Solution

The fourth proportional to 65,905.40, 98,723.70 and 40,868.60 is: 61,219.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,905.40 : 98,723.70 = 40,868.60 : x
  2. Step 2: Convert to fraction form
    65,905.40/98,723.70 = 40,868.60/x
  3. Step 3: Cross multiply
    65,905.40x = 98,723.70 × 40,868.60
  4. Step 4: Simplify right side
    65,905.40x = 4,034,699,405.82
  5. Step 5: Solve for x
    x = 4,034,699,405.82/65,905.40
  6. Step 6: Final answer
    x = 61,219.56

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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.