Home / 52,107.12-78,159.72-12,663.96

Finding the Fourth Proportional to 52,107.12, 78,159.72 and 12,663.96

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Solution

The fourth proportional to 52,107.12, 78,159.72 and 12,663.96 is: 18,995.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,107.12 : 78,159.72 = 12,663.96 : x
  2. Step 2: Convert to fraction form
    52,107.12/78,159.72 = 12,663.96/x
  3. Step 3: Cross multiply
    52,107.12x = 78,159.72 × 12,663.96
  4. Step 4: Simplify right side
    52,107.12x = 989,811,567.69
  5. Step 5: Solve for x
    x = 989,811,567.69/52,107.12
  6. Step 6: Final answer
    x = 18,995.71

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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.