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Finding the Fourth Proportional to 70,356.28, 105,556.50 and 30,946.52

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Solution

The fourth proportional to 70,356.28, 105,556.50 and 30,946.52 is: 46,429.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,356.28 : 105,556.50 = 30,946.52 : x
  2. Step 2: Convert to fraction form
    70,356.28/105,556.50 = 30,946.52/x
  3. Step 3: Cross multiply
    70,356.28x = 105,556.50 × 30,946.52
  4. Step 4: Simplify right side
    70,356.28x = 3,266,606,338.38
  5. Step 5: Solve for x
    x = 3,266,606,338.38/70,356.28
  6. Step 6: Final answer
    x = 46,429.49

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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.