Home / 51,389.51-77,073.68-19,788.73

Finding the Fourth Proportional to 51,389.51, 77,073.68 and 19,788.73

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Solution

The fourth proportional to 51,389.51, 77,073.68 and 19,788.73 is: 29,679.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,389.51 : 77,073.68 = 19,788.73 : x
  2. Step 2: Convert to fraction form
    51,389.51/77,073.68 = 19,788.73/x
  3. Step 3: Cross multiply
    51,389.51x = 77,073.68 × 19,788.73
  4. Step 4: Simplify right side
    51,389.51x = 1,525,190,205.87
  5. Step 5: Solve for x
    x = 1,525,190,205.87/51,389.51
  6. Step 6: Final answer
    x = 29,679.02

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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.