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Finding the Fourth Proportional to 65,509.44, 90,403.20 and 37,224.48

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Solution

The fourth proportional to 65,509.44, 90,403.20 and 37,224.48 is: 51,369.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,509.44 : 90,403.20 = 37,224.48 : x
  2. Step 2: Convert to fraction form
    65,509.44/90,403.20 = 37,224.48/x
  3. Step 3: Cross multiply
    65,509.44x = 90,403.20 × 37,224.48
  4. Step 4: Simplify right side
    65,509.44x = 3,365,212,110.34
  5. Step 5: Solve for x
    x = 3,365,212,110.34/65,509.44
  6. Step 6: Final answer
    x = 51,369.88

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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.