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Finding the Fourth Proportional to 30,371.98, 45,559.36 and 9,310.50

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Solution

The fourth proportional to 30,371.98, 45,559.36 and 9,310.50 is: 13,966.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,371.98 : 45,559.36 = 9,310.50 : x
  2. Step 2: Convert to fraction form
    30,371.98/45,559.36 = 9,310.50/x
  3. Step 3: Cross multiply
    30,371.98x = 45,559.36 × 9,310.50
  4. Step 4: Simplify right side
    30,371.98x = 424,180,421.28
  5. Step 5: Solve for x
    x = 424,180,421.28/30,371.98
  6. Step 6: Final answer
    x = 13,966.18

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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.