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Finding the Fourth Proportional to 47,349.40, 70,974.90 and 19,257.40

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Solution

The fourth proportional to 47,349.40, 70,974.90 and 19,257.40 is: 28,866.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,349.40 : 70,974.90 = 19,257.40 : x
  2. Step 2: Convert to fraction form
    47,349.40/70,974.90 = 19,257.40/x
  3. Step 3: Cross multiply
    47,349.40x = 70,974.90 × 19,257.40
  4. Step 4: Simplify right side
    47,349.40x = 1,366,792,039.26
  5. Step 5: Solve for x
    x = 1,366,792,039.26/47,349.40
  6. Step 6: Final answer
    x = 28,866.09

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1.5x scale

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.