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Finding the Fourth Proportional to 60,400.60, 90,698.10 and 40,766.20

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Solution

The fourth proportional to 60,400.60, 90,698.10 and 40,766.20 is: 61,214.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,400.60 : 90,698.10 = 40,766.20 : x
  2. Step 2: Convert to fraction form
    60,400.60/90,698.10 = 40,766.20/x
  3. Step 3: Cross multiply
    60,400.60x = 90,698.10 × 40,766.20
  4. Step 4: Simplify right side
    60,400.60x = 3,697,416,884.22
  5. Step 5: Solve for x
    x = 3,697,416,884.22/60,400.60
  6. Step 6: Final answer
    x = 61,214.90

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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.