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Finding the Fourth Proportional to 65,503.35, 90,303.09 and 55,391.22

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Solution

The fourth proportional to 65,503.35, 90,303.09 and 55,391.22 is: 76,362.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,503.35 : 90,303.09 = 55,391.22 : x
  2. Step 2: Convert to fraction form
    65,503.35/90,303.09 = 55,391.22/x
  3. Step 3: Cross multiply
    65,503.35x = 90,303.09 × 55,391.22
  4. Step 4: Simplify right side
    65,503.35x = 5,001,998,324.87
  5. Step 5: Solve for x
    x = 5,001,998,324.87/65,503.35
  6. Step 6: Final answer
    x = 76,362.48

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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.