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Finding the Fourth Proportional to 43,403.60, 65,105.40 and 25,907.60

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Solution

The fourth proportional to 43,403.60, 65,105.40 and 25,907.60 is: 38,861.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,403.60 : 65,105.40 = 25,907.60 : x
  2. Step 2: Convert to fraction form
    43,403.60/65,105.40 = 25,907.60/x
  3. Step 3: Cross multiply
    43,403.60x = 65,105.40 × 25,907.60
  4. Step 4: Simplify right side
    43,403.60x = 1,686,724,661.04
  5. Step 5: Solve for x
    x = 1,686,724,661.04/43,403.60
  6. Step 6: Final answer
    x = 38,861.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.