Home / 51,991.48-77,987.10-16,931.08

Finding the Fourth Proportional to 51,991.48, 77,987.10 and 16,931.08

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Solution

The fourth proportional to 51,991.48, 77,987.10 and 16,931.08 is: 25,396.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,991.48 : 77,987.10 = 16,931.08 : x
  2. Step 2: Convert to fraction form
    51,991.48/77,987.10 = 16,931.08/x
  3. Step 3: Cross multiply
    51,991.48x = 77,987.10 × 16,931.08
  4. Step 4: Simplify right side
    51,991.48x = 1,320,405,829.07
  5. Step 5: Solve for x
    x = 1,320,405,829.07/51,991.48
  6. Step 6: Final answer
    x = 25,396.58

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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.