Home / 51,840.63-77,760.81-20,697.75

Finding the Fourth Proportional to 51,840.63, 77,760.81 and 20,697.75

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Solution

The fourth proportional to 51,840.63, 77,760.81 and 20,697.75 is: 31,046.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,840.63 : 77,760.81 = 20,697.75 : x
  2. Step 2: Convert to fraction form
    51,840.63/77,760.81 = 20,697.75/x
  3. Step 3: Cross multiply
    51,840.63x = 77,760.81 × 20,697.75
  4. Step 4: Simplify right side
    51,840.63x = 1,609,473,805.18
  5. Step 5: Solve for x
    x = 1,609,473,805.18/51,840.63
  6. Step 6: Final answer
    x = 31,046.57

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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.