Home / 65,439.40-98,137.50-21,055.54

Finding the Fourth Proportional to 65,439.40, 98,137.50 and 21,055.54

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Solution

The fourth proportional to 65,439.40, 98,137.50 and 21,055.54 is: 31,576.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,439.40 : 98,137.50 = 21,055.54 : x
  2. Step 2: Convert to fraction form
    65,439.40/98,137.50 = 21,055.54/x
  3. Step 3: Cross multiply
    65,439.40x = 98,137.50 × 21,055.54
  4. Step 4: Simplify right side
    65,439.40x = 2,066,338,056.75
  5. Step 5: Solve for x
    x = 2,066,338,056.75/65,439.40
  6. Step 6: Final answer
    x = 31,576.36

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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.