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Finding the Fourth Proportional to 51,999.98, 77,999.76 and 12,557.03

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Solution

The fourth proportional to 51,999.98, 77,999.76 and 12,557.03 is: 18,835.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,999.98 : 77,999.76 = 12,557.03 : x
  2. Step 2: Convert to fraction form
    51,999.98/77,999.76 = 12,557.03/x
  3. Step 3: Cross multiply
    51,999.98x = 77,999.76 × 12,557.03
  4. Step 4: Simplify right side
    51,999.98x = 979,444,936.31
  5. Step 5: Solve for x
    x = 979,444,936.31/51,999.98
  6. Step 6: Final answer
    x = 18,835.49

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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.