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Finding the Fourth Proportional to 64,360.44, 96,539.45 and 19,986.21

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Solution

The fourth proportional to 64,360.44, 96,539.45 and 19,986.21 is: 29,978.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,360.44 : 96,539.45 = 19,986.21 : x
  2. Step 2: Convert to fraction form
    64,360.44/96,539.45 = 19,986.21/x
  3. Step 3: Cross multiply
    64,360.44x = 96,539.45 × 19,986.21
  4. Step 4: Simplify right side
    64,360.44x = 1,929,457,621.05
  5. Step 5: Solve for x
    x = 1,929,457,621.05/64,360.44
  6. Step 6: Final answer
    x = 29,978.94

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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.