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Finding the Fourth Proportional to 71,566.20, 107,219.70 and 60,420.60

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Solution

The fourth proportional to 71,566.20, 107,219.70 and 60,420.60 is: 90,521.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,566.20 : 107,219.70 = 60,420.60 : x
  2. Step 2: Convert to fraction form
    71,566.20/107,219.70 = 60,420.60/x
  3. Step 3: Cross multiply
    71,566.20x = 107,219.70 × 60,420.60
  4. Step 4: Simplify right side
    71,566.20x = 6,478,278,605.82
  5. Step 5: Solve for x
    x = 6,478,278,605.82/71,566.20
  6. Step 6: Final answer
    x = 90,521.48

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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.