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Finding the Fourth Proportional to 45,897.64, 68,840.70 and 18,197.80

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Solution

The fourth proportional to 45,897.64, 68,840.70 and 18,197.80 is: 27,294.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,897.64 : 68,840.70 = 18,197.80 : x
  2. Step 2: Convert to fraction form
    45,897.64/68,840.70 = 18,197.80/x
  3. Step 3: Cross multiply
    45,897.64x = 68,840.70 × 18,197.80
  4. Step 4: Simplify right side
    45,897.64x = 1,252,749,290.46
  5. Step 5: Solve for x
    x = 1,252,749,290.46/45,897.64
  6. Step 6: Final answer
    x = 27,294.42

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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.