Home / 52,099.20-78,148.80-12,656.05

Finding the Fourth Proportional to 52,099.20, 78,148.80 and 12,656.05

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Solution

The fourth proportional to 52,099.20, 78,148.80 and 12,656.05 is: 18,984.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,099.20 : 78,148.80 = 12,656.05 : x
  2. Step 2: Convert to fraction form
    52,099.20/78,148.80 = 12,656.05/x
  3. Step 3: Cross multiply
    52,099.20x = 78,148.80 × 12,656.05
  4. Step 4: Simplify right side
    52,099.20x = 989,054,924.87
  5. Step 5: Solve for x
    x = 989,054,924.87/52,099.20
  6. Step 6: Final answer
    x = 18,984.07

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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.