Home / 65,322.20-90,153.78-47,231.66

Finding the Fourth Proportional to 65,322.20, 90,153.78 and 47,231.66

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Solution

The fourth proportional to 65,322.20, 90,153.78 and 47,231.66 is: 65,186.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,322.20 : 90,153.78 = 47,231.66 : x
  2. Step 2: Convert to fraction form
    65,322.20/90,153.78 = 47,231.66/x
  3. Step 3: Cross multiply
    65,322.20x = 90,153.78 × 47,231.66
  4. Step 4: Simplify right side
    65,322.20x = 4,258,112,684.67
  5. Step 5: Solve for x
    x = 4,258,112,684.67/65,322.20
  6. Step 6: Final answer
    x = 65,186.30

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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.