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Finding the Fourth Proportional to 43,405.40, 65,002.95 and 30,040.94

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Solution

The fourth proportional to 43,405.40, 65,002.95 and 30,040.94 is: 44,988.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,405.40 : 65,002.95 = 30,040.94 : x
  2. Step 2: Convert to fraction form
    43,405.40/65,002.95 = 30,040.94/x
  3. Step 3: Cross multiply
    43,405.40x = 65,002.95 × 30,040.94
  4. Step 4: Simplify right side
    43,405.40x = 1,952,749,395.76
  5. Step 5: Solve for x
    x = 1,952,749,395.76/43,405.40
  6. Step 6: Final answer
    x = 44,988.63

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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.