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Finding the Fourth Proportional to 69,030.20, 103,472.40 and 39,384.20

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Solution

The fourth proportional to 69,030.20, 103,472.40 and 39,384.20 is: 59,034.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,030.20 : 103,472.40 = 39,384.20 : x
  2. Step 2: Convert to fraction form
    69,030.20/103,472.40 = 39,384.20/x
  3. Step 3: Cross multiply
    69,030.20x = 103,472.40 × 39,384.20
  4. Step 4: Simplify right side
    69,030.20x = 4,075,177,696.08
  5. Step 5: Solve for x
    x = 4,075,177,696.08/69,030.20
  6. Step 6: Final answer
    x = 59,034.71

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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.