Home / 52,142.30-78,212.64-12,699.08

Finding the Fourth Proportional to 52,142.30, 78,212.64 and 12,699.08

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Solution

The fourth proportional to 52,142.30, 78,212.64 and 12,699.08 is: 19,048.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,142.30 : 78,212.64 = 12,699.08 : x
  2. Step 2: Convert to fraction form
    52,142.30/78,212.64 = 12,699.08/x
  3. Step 3: Cross multiply
    52,142.30x = 78,212.64 × 12,699.08
  4. Step 4: Simplify right side
    52,142.30x = 993,228,572.37
  5. Step 5: Solve for x
    x = 993,228,572.37/52,142.30
  6. Step 6: Final answer
    x = 19,048.42

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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.