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Finding the Fourth Proportional to 65,735.88, 90,734.09 and 38,887.71

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Solution

The fourth proportional to 65,735.88, 90,734.09 and 38,887.71 is: 53,676.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,735.88 : 90,734.09 = 38,887.71 : x
  2. Step 2: Convert to fraction form
    65,735.88/90,734.09 = 38,887.71/x
  3. Step 3: Cross multiply
    65,735.88x = 90,734.09 × 38,887.71
  4. Step 4: Simplify right side
    65,735.88x = 3,528,440,784.60
  5. Step 5: Solve for x
    x = 3,528,440,784.60/65,735.88
  6. Step 6: Final answer
    x = 53,676.03

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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.