Home / 43,320.24-64,878-21,148.80

Finding the Fourth Proportional to 43,320.24, 64,878 and 21,148.80

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Solution

The fourth proportional to 43,320.24, 64,878 and 21,148.80 is: 31,673.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,320.24 : 64,878 = 21,148.80 : x
  2. Step 2: Convert to fraction form
    43,320.24/64,878 = 21,148.80/x
  3. Step 3: Cross multiply
    43,320.24x = 64,878 × 21,148.80
  4. Step 4: Simplify right side
    43,320.24x = 1,372,091,846.40
  5. Step 5: Solve for x
    x = 1,372,091,846.40/43,320.24
  6. Step 6: Final answer
    x = 31,673.23

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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.