Home / 51,986.16-77,987.40-16,917.60

Finding the Fourth Proportional to 51,986.16, 77,987.40 and 16,917.60

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Solution

The fourth proportional to 51,986.16, 77,987.40 and 16,917.60 is: 25,379.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,986.16 : 77,987.40 = 16,917.60 : x
  2. Step 2: Convert to fraction form
    51,986.16/77,987.40 = 16,917.60/x
  3. Step 3: Cross multiply
    51,986.16x = 77,987.40 × 16,917.60
  4. Step 4: Simplify right side
    51,986.16x = 1,319,359,638.24
  5. Step 5: Solve for x
    x = 1,319,359,638.24/51,986.16
  6. Step 6: Final answer
    x = 25,379.06

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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.