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Finding the Fourth Proportional to 40,070.60, 60,105.90 and 12,368.60

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Solution

The fourth proportional to 40,070.60, 60,105.90 and 12,368.60 is: 18,552.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,070.60 : 60,105.90 = 12,368.60 : x
  2. Step 2: Convert to fraction form
    40,070.60/60,105.90 = 12,368.60/x
  3. Step 3: Cross multiply
    40,070.60x = 60,105.90 × 12,368.60
  4. Step 4: Simplify right side
    40,070.60x = 743,425,834.74
  5. Step 5: Solve for x
    x = 743,425,834.74/40,070.60
  6. Step 6: Final answer
    x = 18,552.90

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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.