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Finding the Fourth Proportional to 30,245.49, 45,368.13 and 7,756.14

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Solution

The fourth proportional to 30,245.49, 45,368.13 and 7,756.14 is: 11,634.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,245.49 : 45,368.13 = 7,756.14 : x
  2. Step 2: Convert to fraction form
    30,245.49/45,368.13 = 7,756.14/x
  3. Step 3: Cross multiply
    30,245.49x = 45,368.13 × 7,756.14
  4. Step 4: Simplify right side
    30,245.49x = 351,881,657.73
  5. Step 5: Solve for x
    x = 351,881,657.73/30,245.49
  6. Step 6: Final answer
    x = 11,634.19

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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.