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Finding the Fourth Proportional to 70,212.39, 105,344.88 and 36,457.32

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Solution

The fourth proportional to 70,212.39, 105,344.88 and 36,457.32 is: 54,699.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,212.39 : 105,344.88 = 36,457.32 : x
  2. Step 2: Convert to fraction form
    70,212.39/105,344.88 = 36,457.32/x
  3. Step 3: Cross multiply
    70,212.39x = 105,344.88 × 36,457.32
  4. Step 4: Simplify right side
    70,212.39x = 3,840,592,258.85
  5. Step 5: Solve for x
    x = 3,840,592,258.85/70,212.39
  6. Step 6: Final answer
    x = 54,699.64

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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.