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Finding the Fourth Proportional to 70,000.58, 105,064 and 47,456.70

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Solution

The fourth proportional to 70,000.58, 105,064 and 47,456.70 is: 71,227.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,000.58 : 105,064 = 47,456.70 : x
  2. Step 2: Convert to fraction form
    70,000.58/105,064 = 47,456.70/x
  3. Step 3: Cross multiply
    70,000.58x = 105,064 × 47,456.70
  4. Step 4: Simplify right side
    70,000.58x = 4,985,990,728.80
  5. Step 5: Solve for x
    x = 4,985,990,728.80/70,000.58
  6. Step 6: Final answer
    x = 71,227.85

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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.