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Finding the Fourth Proportional to 71,125.20, 106,590.60 and 47,365.20

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Solution

The fourth proportional to 71,125.20, 106,590.60 and 47,365.20 is: 70,983.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,125.20 : 106,590.60 = 47,365.20 : x
  2. Step 2: Convert to fraction form
    71,125.20/106,590.60 = 47,365.20/x
  3. Step 3: Cross multiply
    71,125.20x = 106,590.60 × 47,365.20
  4. Step 4: Simplify right side
    71,125.20x = 5,048,685,087.12
  5. Step 5: Solve for x
    x = 5,048,685,087.12/71,125.20
  6. Step 6: Final answer
    x = 70,983.07

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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.