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Finding the Fourth Proportional to 40,457.20, 60,750.60 and 30,607.60

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Solution

The fourth proportional to 40,457.20, 60,750.60 and 30,607.60 is: 45,960.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,457.20 : 60,750.60 = 30,607.60 : x
  2. Step 2: Convert to fraction form
    40,457.20/60,750.60 = 30,607.60/x
  3. Step 3: Cross multiply
    40,457.20x = 60,750.60 × 30,607.60
  4. Step 4: Simplify right side
    40,457.20x = 1,859,430,064.56
  5. Step 5: Solve for x
    x = 1,859,430,064.56/40,457.20
  6. Step 6: Final answer
    x = 45,960.42

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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.