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Finding the Fourth Proportional to 70,535.73, 105,819.71 and 30,561.35

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Solution

The fourth proportional to 70,535.73, 105,819.71 and 30,561.35 is: 45,849.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,535.73 : 105,819.71 = 30,561.35 : x
  2. Step 2: Convert to fraction form
    70,535.73/105,819.71 = 30,561.35/x
  3. Step 3: Cross multiply
    70,535.73x = 105,819.71 × 30,561.35
  4. Step 4: Simplify right side
    70,535.73x = 3,233,993,041.40
  5. Step 5: Solve for x
    x = 3,233,993,041.40/70,535.73
  6. Step 6: Final answer
    x = 45,849.01

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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.