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Finding the Fourth Proportional to 65,402.96, 90,259.07 and 38,546.60

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Solution

The fourth proportional to 65,402.96, 90,259.07 and 38,546.60 is: 53,196.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,402.96 : 90,259.07 = 38,546.60 : x
  2. Step 2: Convert to fraction form
    65,402.96/90,259.07 = 38,546.60/x
  3. Step 3: Cross multiply
    65,402.96x = 90,259.07 × 38,546.60
  4. Step 4: Simplify right side
    65,402.96x = 3,479,179,623.63
  5. Step 5: Solve for x
    x = 3,479,179,623.63/65,402.96
  6. Step 6: Final answer
    x = 53,196.06

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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.