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Finding the Fourth Proportional to 53,191.93, 79,720.05 and 28,243.93

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Solution

The fourth proportional to 53,191.93, 79,720.05 and 28,243.93 is: 42,329.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,191.93 : 79,720.05 = 28,243.93 : x
  2. Step 2: Convert to fraction form
    53,191.93/79,720.05 = 28,243.93/x
  3. Step 3: Cross multiply
    53,191.93x = 79,720.05 × 28,243.93
  4. Step 4: Simplify right side
    53,191.93x = 2,251,607,113.20
  5. Step 5: Solve for x
    x = 2,251,607,113.20/53,191.93
  6. Step 6: Final answer
    x = 42,329.87

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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.