Home / 30,486.78-45,635.40-27,902.88

Finding the Fourth Proportional to 30,486.78, 45,635.40 and 27,902.88

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Solution

The fourth proportional to 30,486.78, 45,635.40 and 27,902.88 is: 41,767.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,486.78 : 45,635.40 = 27,902.88 : x
  2. Step 2: Convert to fraction form
    30,486.78/45,635.40 = 27,902.88/x
  3. Step 3: Cross multiply
    30,486.78x = 45,635.40 × 27,902.88
  4. Step 4: Simplify right side
    30,486.78x = 1,273,359,089.95
  5. Step 5: Solve for x
    x = 1,273,359,089.95/30,486.78
  6. Step 6: Final answer
    x = 41,767.58

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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.