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Finding the Fourth Proportional to 47,855.73, 71,778.13 and 12,798.12

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Solution

The fourth proportional to 47,855.73, 71,778.13 and 12,798.12 is: 19,195.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,855.73 : 71,778.13 = 12,798.12 : x
  2. Step 2: Convert to fraction form
    47,855.73/71,778.13 = 12,798.12/x
  3. Step 3: Cross multiply
    47,855.73x = 71,778.13 × 12,798.12
  4. Step 4: Simplify right side
    47,855.73x = 918,625,430.28
  5. Step 5: Solve for x
    x = 918,625,430.28/47,855.73
  6. Step 6: Final answer
    x = 19,195.72

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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.