Home / 65,469.43-90,345.53-40,018.55

Finding the Fourth Proportional to 65,469.43, 90,345.53 and 40,018.55

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Solution

The fourth proportional to 65,469.43, 90,345.53 and 40,018.55 is: 55,224.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,469.43 : 90,345.53 = 40,018.55 : x
  2. Step 2: Convert to fraction form
    65,469.43/90,345.53 = 40,018.55/x
  3. Step 3: Cross multiply
    65,469.43x = 90,345.53 × 40,018.55
  4. Step 4: Simplify right side
    65,469.43x = 3,615,496,909.49
  5. Step 5: Solve for x
    x = 3,615,496,909.49/65,469.43
  6. Step 6: Final answer
    x = 55,224.20

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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.