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Finding the Fourth Proportional to 43,346.40, 65,019.60 and 38,421.60

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Solution

The fourth proportional to 43,346.40, 65,019.60 and 38,421.60 is: 57,632.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,346.40 : 65,019.60 = 38,421.60 : x
  2. Step 2: Convert to fraction form
    43,346.40/65,019.60 = 38,421.60/x
  3. Step 3: Cross multiply
    43,346.40x = 65,019.60 × 38,421.60
  4. Step 4: Simplify right side
    43,346.40x = 2,498,157,063.36
  5. Step 5: Solve for x
    x = 2,498,157,063.36/43,346.40
  6. Step 6: Final answer
    x = 57,632.40

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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.