Home / 51,390.63-77,064.21-18,102.60

Finding the Fourth Proportional to 51,390.63, 77,064.21 and 18,102.60

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Solution

The fourth proportional to 51,390.63, 77,064.21 and 18,102.60 is: 27,146.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,390.63 : 77,064.21 = 18,102.60 : x
  2. Step 2: Convert to fraction form
    51,390.63/77,064.21 = 18,102.60/x
  3. Step 3: Cross multiply
    51,390.63x = 77,064.21 × 18,102.60
  4. Step 4: Simplify right side
    51,390.63x = 1,395,062,567.95
  5. Step 5: Solve for x
    x = 1,395,062,567.95/51,390.63
  6. Step 6: Final answer
    x = 27,146.24

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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.