Home / 65,439.21-98,137.98-21,055.62

Finding the Fourth Proportional to 65,439.21, 98,137.98 and 21,055.62

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Solution

The fourth proportional to 65,439.21, 98,137.98 and 21,055.62 is: 31,576.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,439.21 : 98,137.98 = 21,055.62 : x
  2. Step 2: Convert to fraction form
    65,439.21/98,137.98 = 21,055.62/x
  3. Step 3: Cross multiply
    65,439.21x = 98,137.98 × 21,055.62
  4. Step 4: Simplify right side
    65,439.21x = 2,066,356,014.45
  5. Step 5: Solve for x
    x = 2,066,356,014.45/65,439.21
  6. Step 6: Final answer
    x = 31,576.73

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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.