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Finding the Fourth Proportional to 65,220.96, 90,004.96 and 35,412.96

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Solution

The fourth proportional to 65,220.96, 90,004.96 and 35,412.96 is: 48,869.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,220.96 : 90,004.96 = 35,412.96 : x
  2. Step 2: Convert to fraction form
    65,220.96/90,004.96 = 35,412.96/x
  3. Step 3: Cross multiply
    65,220.96x = 90,004.96 × 35,412.96
  4. Step 4: Simplify right side
    65,220.96x = 3,187,342,048.28
  5. Step 5: Solve for x
    x = 3,187,342,048.28/65,220.96
  6. Step 6: Final answer
    x = 48,869.90

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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.