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Finding the Fourth Proportional to 65,883.48, 90,919.23 and 35,668.80

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Solution

The fourth proportional to 65,883.48, 90,919.23 and 35,668.80 is: 49,222.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,883.48 : 90,919.23 = 35,668.80 : x
  2. Step 2: Convert to fraction form
    65,883.48/90,919.23 = 35,668.80/x
  3. Step 3: Cross multiply
    65,883.48x = 90,919.23 × 35,668.80
  4. Step 4: Simplify right side
    65,883.48x = 3,242,979,831.02
  5. Step 5: Solve for x
    x = 3,242,979,831.02/65,883.48
  6. Step 6: Final answer
    x = 49,222.96

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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.