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Finding the Fourth Proportional to 75,283.73, 103,630.75 and 65,070.06

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Solution

The fourth proportional to 75,283.73, 103,630.75 and 65,070.06 is: 89,571.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,283.73 : 103,630.75 = 65,070.06 : x
  2. Step 2: Convert to fraction form
    75,283.73/103,630.75 = 65,070.06/x
  3. Step 3: Cross multiply
    75,283.73x = 103,630.75 × 65,070.06
  4. Step 4: Simplify right side
    75,283.73x = 6,743,259,120.35
  5. Step 5: Solve for x
    x = 6,743,259,120.35/75,283.73
  6. Step 6: Final answer
    x = 89,571.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.