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Finding the Fourth Proportional to 65,395.74, 90,245.26 and 38,539.38

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Solution

The fourth proportional to 65,395.74, 90,245.26 and 38,539.38 is: 53,183.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,395.74 : 90,245.26 = 38,539.38 : x
  2. Step 2: Convert to fraction form
    65,395.74/90,245.26 = 38,539.38/x
  3. Step 3: Cross multiply
    65,395.74x = 90,245.26 × 38,539.38
  4. Step 4: Simplify right side
    65,395.74x = 3,477,996,368.34
  5. Step 5: Solve for x
    x = 3,477,996,368.34/65,395.74
  6. Step 6: Final answer
    x = 53,183.84

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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.