Home / 47,756.69-71,639.59-19,678.65

Finding the Fourth Proportional to 47,756.69, 71,639.59 and 19,678.65

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Solution

The fourth proportional to 47,756.69, 71,639.59 and 19,678.65 is: 29,519.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,756.69 : 71,639.59 = 19,678.65 : x
  2. Step 2: Convert to fraction form
    47,756.69/71,639.59 = 19,678.65/x
  3. Step 3: Cross multiply
    47,756.69x = 71,639.59 × 19,678.65
  4. Step 4: Simplify right side
    47,756.69x = 1,409,770,417.75
  5. Step 5: Solve for x
    x = 1,409,770,417.75/47,756.69
  6. Step 6: Final answer
    x = 29,519.85

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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.