Home / 52,099.11-78,147.59-12,656.43

Finding the Fourth Proportional to 52,099.11, 78,147.59 and 12,656.43

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Solution

The fourth proportional to 52,099.11, 78,147.59 and 12,656.43 is: 18,984.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,099.11 : 78,147.59 = 12,656.43 : x
  2. Step 2: Convert to fraction form
    52,099.11/78,147.59 = 12,656.43/x
  3. Step 3: Cross multiply
    52,099.11x = 78,147.59 × 12,656.43
  4. Step 4: Simplify right side
    52,099.11x = 989,069,439.22
  5. Step 5: Solve for x
    x = 989,069,439.22/52,099.11
  6. Step 6: Final answer
    x = 18,984.38

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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.