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Finding the Fourth Proportional to 47,722.40, 71,583.60 and 45,000.80

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Solution

The fourth proportional to 47,722.40, 71,583.60 and 45,000.80 is: 67,501.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,722.40 : 71,583.60 = 45,000.80 : x
  2. Step 2: Convert to fraction form
    47,722.40/71,583.60 = 45,000.80/x
  3. Step 3: Cross multiply
    47,722.40x = 71,583.60 × 45,000.80
  4. Step 4: Simplify right side
    47,722.40x = 3,221,319,266.88
  5. Step 5: Solve for x
    x = 3,221,319,266.88/47,722.40
  6. Step 6: Final answer
    x = 67,501.20

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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.