Home / 43,225.45-64,840.20-21,012.34

Finding the Fourth Proportional to 43,225.45, 64,840.20 and 21,012.34

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Solution

The fourth proportional to 43,225.45, 64,840.20 and 21,012.34 is: 31,519.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,225.45 : 64,840.20 = 21,012.34 : x
  2. Step 2: Convert to fraction form
    43,225.45/64,840.20 = 21,012.34/x
  3. Step 3: Cross multiply
    43,225.45x = 64,840.20 × 21,012.34
  4. Step 4: Simplify right side
    43,225.45x = 1,362,444,328.07
  5. Step 5: Solve for x
    x = 1,362,444,328.07/43,225.45
  6. Step 6: Final answer
    x = 31,519.49

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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.