Home / 51,186.18-76,779.27-19,999.56

Finding the Fourth Proportional to 51,186.18, 76,779.27 and 19,999.56

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Solution

The fourth proportional to 51,186.18, 76,779.27 and 19,999.56 is: 29,999.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,186.18 : 76,779.27 = 19,999.56 : x
  2. Step 2: Convert to fraction form
    51,186.18/76,779.27 = 19,999.56/x
  3. Step 3: Cross multiply
    51,186.18x = 76,779.27 × 19,999.56
  4. Step 4: Simplify right side
    51,186.18x = 1,535,551,617.12
  5. Step 5: Solve for x
    x = 1,535,551,617.12/51,186.18
  6. Step 6: Final answer
    x = 29,999.34

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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.