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Finding the Fourth Proportional to 47,369.40, 70,967.70 and 28,879.80

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Solution

The fourth proportional to 47,369.40, 70,967.70 and 28,879.80 is: 43,267.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,369.40 : 70,967.70 = 28,879.80 : x
  2. Step 2: Convert to fraction form
    47,369.40/70,967.70 = 28,879.80/x
  3. Step 3: Cross multiply
    47,369.40x = 70,967.70 × 28,879.80
  4. Step 4: Simplify right side
    47,369.40x = 2,049,532,982.46
  5. Step 5: Solve for x
    x = 2,049,532,982.46/47,369.40
  6. Step 6: Final answer
    x = 43,267.02

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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.