Home / 39,700.22-54,782.85-21,795.20

Finding the Fourth Proportional to 39,700.22, 54,782.85 and 21,795.20

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Solution

The fourth proportional to 39,700.22, 54,782.85 and 21,795.20 is: 30,075.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,700.22 : 54,782.85 = 21,795.20 : x
  2. Step 2: Convert to fraction form
    39,700.22/54,782.85 = 21,795.20/x
  3. Step 3: Cross multiply
    39,700.22x = 54,782.85 × 21,795.20
  4. Step 4: Simplify right side
    39,700.22x = 1,194,003,172.32
  5. Step 5: Solve for x
    x = 1,194,003,172.32/39,700.22
  6. Step 6: Final answer
    x = 30,075.48

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.