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Finding the Fourth Proportional to 65,241.78, 90,030.90 and 38,020.44

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Solution

The fourth proportional to 65,241.78, 90,030.90 and 38,020.44 is: 52,466.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,241.78 : 90,030.90 = 38,020.44 : x
  2. Step 2: Convert to fraction form
    65,241.78/90,030.90 = 38,020.44/x
  3. Step 3: Cross multiply
    65,241.78x = 90,030.90 × 38,020.44
  4. Step 4: Simplify right side
    65,241.78x = 3,423,014,431.60
  5. Step 5: Solve for x
    x = 3,423,014,431.60/65,241.78
  6. Step 6: Final answer
    x = 52,466.60

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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.