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Finding the Fourth Proportional to 65,763.80, 90,752.20 and 37,083.20

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Solution

The fourth proportional to 65,763.80, 90,752.20 and 37,083.20 is: 51,173.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,763.80 : 90,752.20 = 37,083.20 : x
  2. Step 2: Convert to fraction form
    65,763.80/90,752.20 = 37,083.20/x
  3. Step 3: Cross multiply
    65,763.80x = 90,752.20 × 37,083.20
  4. Step 4: Simplify right side
    65,763.80x = 3,365,381,983.04
  5. Step 5: Solve for x
    x = 3,365,381,983.04/65,763.80
  6. Step 6: Final answer
    x = 51,173.78

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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.