Home / 52,118.90-78,178.08-12,675.98

Finding the Fourth Proportional to 52,118.90, 78,178.08 and 12,675.98

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Solution

The fourth proportional to 52,118.90, 78,178.08 and 12,675.98 is: 19,013.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,118.90 : 78,178.08 = 12,675.98 : x
  2. Step 2: Convert to fraction form
    52,118.90/78,178.08 = 12,675.98/x
  3. Step 3: Cross multiply
    52,118.90x = 78,178.08 × 12,675.98
  4. Step 4: Simplify right side
    52,118.90x = 990,983,778.52
  5. Step 5: Solve for x
    x = 990,983,778.52/52,118.90
  6. Step 6: Final answer
    x = 19,013.90

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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.