Home / 51,999.21-78,008.54-20,836.89

Finding the Fourth Proportional to 51,999.21, 78,008.54 and 20,836.89

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Solution

The fourth proportional to 51,999.21, 78,008.54 and 20,836.89 is: 31,259.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,999.21 : 78,008.54 = 20,836.89 : x
  2. Step 2: Convert to fraction form
    51,999.21/78,008.54 = 20,836.89/x
  3. Step 3: Cross multiply
    51,999.21x = 78,008.54 × 20,836.89
  4. Step 4: Simplify right side
    51,999.21x = 1,625,455,262.86
  5. Step 5: Solve for x
    x = 1,625,455,262.86/51,999.21
  6. Step 6: Final answer
    x = 31,259.23

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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.