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Finding the Fourth Proportional to 65,756.60, 90,744.74 and 60,733.80

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Solution

The fourth proportional to 65,756.60, 90,744.74 and 60,733.80 is: 83,813.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,756.60 : 90,744.74 = 60,733.80 : x
  2. Step 2: Convert to fraction form
    65,756.60/90,744.74 = 60,733.80/x
  3. Step 3: Cross multiply
    65,756.60x = 90,744.74 × 60,733.80
  4. Step 4: Simplify right side
    65,756.60x = 5,511,272,890.21
  5. Step 5: Solve for x
    x = 5,511,272,890.21/65,756.60
  6. Step 6: Final answer
    x = 83,813.23

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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.