Home / 70,570.20-105,821.28-40,996.50

Finding the Fourth Proportional to 70,570.20, 105,821.28 and 40,996.50

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Solution

The fourth proportional to 70,570.20, 105,821.28 and 40,996.50 is: 61,474.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,570.20 : 105,821.28 = 40,996.50 : x
  2. Step 2: Convert to fraction form
    70,570.20/105,821.28 = 40,996.50/x
  3. Step 3: Cross multiply
    70,570.20x = 105,821.28 × 40,996.50
  4. Step 4: Simplify right side
    70,570.20x = 4,338,302,105.52
  5. Step 5: Solve for x
    x = 4,338,302,105.52/70,570.20
  6. Step 6: Final answer
    x = 61,474.99

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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.