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Finding the Fourth Proportional to 52,986.62, 79,479.68 and 13,543.68

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Solution

The fourth proportional to 52,986.62, 79,479.68 and 13,543.68 is: 20,315.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,986.62 : 79,479.68 = 13,543.68 : x
  2. Step 2: Convert to fraction form
    52,986.62/79,479.68 = 13,543.68/x
  3. Step 3: Cross multiply
    52,986.62x = 79,479.68 × 13,543.68
  4. Step 4: Simplify right side
    52,986.62x = 1,076,447,352.42
  5. Step 5: Solve for x
    x = 1,076,447,352.42/52,986.62
  6. Step 6: Final answer
    x = 20,315.46

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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.