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Finding the Fourth Proportional to 53,191.68, 79,719.67 and 28,243.68

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Solution

The fourth proportional to 53,191.68, 79,719.67 and 28,243.68 is: 42,329.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,191.68 : 79,719.67 = 28,243.68 : x
  2. Step 2: Convert to fraction form
    53,191.68/79,719.67 = 28,243.68/x
  3. Step 3: Cross multiply
    53,191.68x = 79,719.67 × 28,243.68
  4. Step 4: Simplify right side
    53,191.68x = 2,251,576,849.19
  5. Step 5: Solve for x
    x = 2,251,576,849.19/53,191.68
  6. Step 6: Final answer
    x = 42,329.49

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1.5x scale

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.