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Finding the Fourth Proportional to 30,479.58, 45,719.40 and 10,759.32

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Solution

The fourth proportional to 30,479.58, 45,719.40 and 10,759.32 is: 16,138.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,479.58 : 45,719.40 = 10,759.32 : x
  2. Step 2: Convert to fraction form
    30,479.58/45,719.40 = 10,759.32/x
  3. Step 3: Cross multiply
    30,479.58x = 45,719.40 × 10,759.32
  4. Step 4: Simplify right side
    30,479.58x = 491,909,654.81
  5. Step 5: Solve for x
    x = 491,909,654.81/30,479.58
  6. Step 6: Final answer
    x = 16,138.99

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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.