Home / 43,128.72-64,692.36-19,423.08

Finding the Fourth Proportional to 43,128.72, 64,692.36 and 19,423.08

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Solution

The fourth proportional to 43,128.72, 64,692.36 and 19,423.08 is: 29,134.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,128.72 : 64,692.36 = 19,423.08 : x
  2. Step 2: Convert to fraction form
    43,128.72/64,692.36 = 19,423.08/x
  3. Step 3: Cross multiply
    43,128.72x = 64,692.36 × 19,423.08
  4. Step 4: Simplify right side
    43,128.72x = 1,256,524,883.67
  5. Step 5: Solve for x
    x = 1,256,524,883.67/43,128.72
  6. Step 6: Final answer
    x = 29,134.30

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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.