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Finding the Fourth Proportional to 65,217.36, 90,000.48 and 35,409.36

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Solution

The fourth proportional to 65,217.36, 90,000.48 and 35,409.36 is: 48,865.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,217.36 : 90,000.48 = 35,409.36 : x
  2. Step 2: Convert to fraction form
    65,217.36/90,000.48 = 35,409.36/x
  3. Step 3: Cross multiply
    65,217.36x = 90,000.48 × 35,409.36
  4. Step 4: Simplify right side
    65,217.36x = 3,186,859,396.49
  5. Step 5: Solve for x
    x = 3,186,859,396.49/65,217.36
  6. Step 6: Final answer
    x = 48,865.20

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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.