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Finding the Fourth Proportional to 53,179.30, 73,386.48 and 28,980.48

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Solution

The fourth proportional to 53,179.30, 73,386.48 and 28,980.48 is: 39,992.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,179.30 : 73,386.48 = 28,980.48 : x
  2. Step 2: Convert to fraction form
    53,179.30/73,386.48 = 28,980.48/x
  3. Step 3: Cross multiply
    53,179.30x = 73,386.48 × 28,980.48
  4. Step 4: Simplify right side
    53,179.30x = 2,126,775,799.79
  5. Step 5: Solve for x
    x = 2,126,775,799.79/53,179.30
  6. Step 6: Final answer
    x = 39,992.55

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.