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Finding the Fourth Proportional to 65,476.85, 90,355.65 and 40,025.84

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Solution

The fourth proportional to 65,476.85, 90,355.65 and 40,025.84 is: 55,234.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,476.85 : 90,355.65 = 40,025.84 : x
  2. Step 2: Convert to fraction form
    65,476.85/90,355.65 = 40,025.84/x
  3. Step 3: Cross multiply
    65,476.85x = 90,355.65 × 40,025.84
  4. Step 4: Simplify right side
    65,476.85x = 3,616,560,338.22
  5. Step 5: Solve for x
    x = 3,616,560,338.22/65,476.85
  6. Step 6: Final answer
    x = 55,234.19

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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.