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Finding the Fourth Proportional to 53,003.71, 73,143.87 and 28,803.97

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Solution

The fourth proportional to 53,003.71, 73,143.87 and 28,803.97 is: 39,748.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,003.71 : 73,143.87 = 28,803.97 : x
  2. Step 2: Convert to fraction form
    53,003.71/73,143.87 = 28,803.97/x
  3. Step 3: Cross multiply
    53,003.71x = 73,143.87 × 28,803.97
  4. Step 4: Simplify right side
    53,003.71x = 2,106,833,837.16
  5. Step 5: Solve for x
    x = 2,106,833,837.16/53,003.71
  6. Step 6: Final answer
    x = 39,748.80

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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.