Home / 52,108.08-78,161.44-12,665.08

Finding the Fourth Proportional to 52,108.08, 78,161.44 and 12,665.08

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Solution

The fourth proportional to 52,108.08, 78,161.44 and 12,665.08 is: 18,997.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,108.08 : 78,161.44 = 12,665.08 : x
  2. Step 2: Convert to fraction form
    52,108.08/78,161.44 = 12,665.08/x
  3. Step 3: Cross multiply
    52,108.08x = 78,161.44 × 12,665.08
  4. Step 4: Simplify right side
    52,108.08x = 989,920,890.52
  5. Step 5: Solve for x
    x = 989,920,890.52/52,108.08
  6. Step 6: Final answer
    x = 18,997.45

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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.