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Finding the Fourth Proportional to 65,649.96, 90,604.56 and 36,969.90

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Solution

The fourth proportional to 65,649.96, 90,604.56 and 36,969.90 is: 51,022.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,649.96 : 90,604.56 = 36,969.90 : x
  2. Step 2: Convert to fraction form
    65,649.96/90,604.56 = 36,969.90/x
  3. Step 3: Cross multiply
    65,649.96x = 90,604.56 × 36,969.90
  4. Step 4: Simplify right side
    65,649.96x = 3,349,641,522.74
  5. Step 5: Solve for x
    x = 3,349,641,522.74/65,649.96
  6. Step 6: Final answer
    x = 51,022.75

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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.