Home / 65,772.78-98,660.40-21,399.36

Finding the Fourth Proportional to 65,772.78, 98,660.40 and 21,399.36

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Solution

The fourth proportional to 65,772.78, 98,660.40 and 21,399.36 is: 32,099.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,772.78 : 98,660.40 = 21,399.36 : x
  2. Step 2: Convert to fraction form
    65,772.78/98,660.40 = 21,399.36/x
  3. Step 3: Cross multiply
    65,772.78x = 98,660.40 × 21,399.36
  4. Step 4: Simplify right side
    65,772.78x = 2,111,269,417.34
  5. Step 5: Solve for x
    x = 2,111,269,417.34/65,772.78
  6. Step 6: Final answer
    x = 32,099.44

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1.5x scale

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.