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Finding the Fourth Proportional to 50,455.80, 75,683.70 and 45,012.60

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Solution

The fourth proportional to 50,455.80, 75,683.70 and 45,012.60 is: 67,518.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,455.80 : 75,683.70 = 45,012.60 : x
  2. Step 2: Convert to fraction form
    50,455.80/75,683.70 = 45,012.60/x
  3. Step 3: Cross multiply
    50,455.80x = 75,683.70 × 45,012.60
  4. Step 4: Simplify right side
    50,455.80x = 3,406,720,114.62
  5. Step 5: Solve for x
    x = 3,406,720,114.62/50,455.80
  6. Step 6: Final answer
    x = 67,518.90

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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.