Home / 43,147.51-64,728.65-19,775.95

Finding the Fourth Proportional to 43,147.51, 64,728.65 and 19,775.95

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Solution

The fourth proportional to 43,147.51, 64,728.65 and 19,775.95 is: 29,667.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,147.51 : 64,728.65 = 19,775.95 : x
  2. Step 2: Convert to fraction form
    43,147.51/64,728.65 = 19,775.95/x
  3. Step 3: Cross multiply
    43,147.51x = 64,728.65 × 19,775.95
  4. Step 4: Simplify right side
    43,147.51x = 1,280,070,447.09
  5. Step 5: Solve for x
    x = 1,280,070,447.09/43,147.51
  6. Step 6: Final answer
    x = 29,667.31

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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.