Home / 43,128.40-64,670.72-19,734.78

Finding the Fourth Proportional to 43,128.40, 64,670.72 and 19,734.78

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Solution

The fourth proportional to 43,128.40, 64,670.72 and 19,734.78 is: 29,592.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,128.40 : 64,670.72 = 19,734.78 : x
  2. Step 2: Convert to fraction form
    43,128.40/64,670.72 = 19,734.78/x
  3. Step 3: Cross multiply
    43,128.40x = 64,670.72 × 19,734.78
  4. Step 4: Simplify right side
    43,128.40x = 1,276,262,431.64
  5. Step 5: Solve for x
    x = 1,276,262,431.64/43,128.40
  6. Step 6: Final answer
    x = 29,592.16

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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.