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Finding the Fourth Proportional to 65,550.70, 98,315.25 and 28,116.82

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Solution

The fourth proportional to 65,550.70, 98,315.25 and 28,116.82 is: 42,170.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,550.70 : 98,315.25 = 28,116.82 : x
  2. Step 2: Convert to fraction form
    65,550.70/98,315.25 = 28,116.82/x
  3. Step 3: Cross multiply
    65,550.70x = 98,315.25 × 28,116.82
  4. Step 4: Simplify right side
    65,550.70x = 2,764,312,187.51
  5. Step 5: Solve for x
    x = 2,764,312,187.51/65,550.70
  6. Step 6: Final answer
    x = 42,170.60

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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.