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Finding the Fourth Proportional to 47,207.80, 70,811.70 and 43,271.20

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Solution

The fourth proportional to 47,207.80, 70,811.70 and 43,271.20 is: 64,906.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,207.80 : 70,811.70 = 43,271.20 : x
  2. Step 2: Convert to fraction form
    47,207.80/70,811.70 = 43,271.20/x
  3. Step 3: Cross multiply
    47,207.80x = 70,811.70 × 43,271.20
  4. Step 4: Simplify right side
    47,207.80x = 3,064,107,233.04
  5. Step 5: Solve for x
    x = 3,064,107,233.04/47,207.80
  6. Step 6: Final answer
    x = 64,906.80

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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.