Home / 51,904.56-77,853.60-20,717.40

Finding the Fourth Proportional to 51,904.56, 77,853.60 and 20,717.40

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Solution

The fourth proportional to 51,904.56, 77,853.60 and 20,717.40 is: 31,074.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,904.56 : 77,853.60 = 20,717.40 : x
  2. Step 2: Convert to fraction form
    51,904.56/77,853.60 = 20,717.40/x
  3. Step 3: Cross multiply
    51,904.56x = 77,853.60 × 20,717.40
  4. Step 4: Simplify right side
    51,904.56x = 1,612,924,172.64
  5. Step 5: Solve for x
    x = 1,612,924,172.64/51,904.56
  6. Step 6: Final answer
    x = 31,074.81

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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.