Home / 51,153.48-76,741.56-19,989

Finding the Fourth Proportional to 51,153.48, 76,741.56 and 19,989

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Solution

The fourth proportional to 51,153.48, 76,741.56 and 19,989 is: 29,987.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,153.48 : 76,741.56 = 19,989 : x
  2. Step 2: Convert to fraction form
    51,153.48/76,741.56 = 19,989/x
  3. Step 3: Cross multiply
    51,153.48x = 76,741.56 × 19,989
  4. Step 4: Simplify right side
    51,153.48x = 1,533,987,042.84
  5. Step 5: Solve for x
    x = 1,533,987,042.84/51,153.48
  6. Step 6: Final answer
    x = 29,987.93

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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.