Home / 52,139.89-78,209.02-12,696.94

Finding the Fourth Proportional to 52,139.89, 78,209.02 and 12,696.94

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Solution

The fourth proportional to 52,139.89, 78,209.02 and 12,696.94 is: 19,045.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,139.89 : 78,209.02 = 12,696.94 : x
  2. Step 2: Convert to fraction form
    52,139.89/78,209.02 = 12,696.94/x
  3. Step 3: Cross multiply
    52,139.89x = 78,209.02 × 12,696.94
  4. Step 4: Simplify right side
    52,139.89x = 993,015,234.40
  5. Step 5: Solve for x
    x = 993,015,234.40/52,139.89
  6. Step 6: Final answer
    x = 19,045.21

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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.