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Finding the Fourth Proportional to 65,984.97, 98,991.45 and 21,608.44

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Solution

The fourth proportional to 65,984.97, 98,991.45 and 21,608.44 is: 32,417.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,984.97 : 98,991.45 = 21,608.44 : x
  2. Step 2: Convert to fraction form
    65,984.97/98,991.45 = 21,608.44/x
  3. Step 3: Cross multiply
    65,984.97x = 98,991.45 × 21,608.44
  4. Step 4: Simplify right side
    65,984.97x = 2,139,050,807.84
  5. Step 5: Solve for x
    x = 2,139,050,807.84/65,984.97
  6. Step 6: Final answer
    x = 32,417.24

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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.