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Finding the Fourth Proportional to 60,420.60, 90,630.45 and 18,300.60

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Solution

The fourth proportional to 60,420.60, 90,630.45 and 18,300.60 is: 27,450.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,420.60 : 90,630.45 = 18,300.60 : x
  2. Step 2: Convert to fraction form
    60,420.60/90,630.45 = 18,300.60/x
  3. Step 3: Cross multiply
    60,420.60x = 90,630.45 × 18,300.60
  4. Step 4: Simplify right side
    60,420.60x = 1,658,591,613.27
  5. Step 5: Solve for x
    x = 1,658,591,613.27/60,420.60
  6. Step 6: Final answer
    x = 27,450.76

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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.