Home / 51,999.09-78,008.35-20,836.77

Finding the Fourth Proportional to 51,999.09, 78,008.35 and 20,836.77

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Solution

The fourth proportional to 51,999.09, 78,008.35 and 20,836.77 is: 31,259.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,999.09 : 78,008.35 = 20,836.77 : x
  2. Step 2: Convert to fraction form
    51,999.09/78,008.35 = 20,836.77/x
  3. Step 3: Cross multiply
    51,999.09x = 78,008.35 × 20,836.77
  4. Step 4: Simplify right side
    51,999.09x = 1,625,442,047.03
  5. Step 5: Solve for x
    x = 1,625,442,047.03/51,999.09
  6. Step 6: Final answer
    x = 31,259.05

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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.