Home / 83,838.56-115,638.63-56,934.36

Finding the Fourth Proportional to 83,838.56, 115,638.63 and 56,934.36

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Solution

The fourth proportional to 83,838.56, 115,638.63 and 56,934.36 is: 78,529.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,838.56 : 115,638.63 = 56,934.36 : x
  2. Step 2: Convert to fraction form
    83,838.56/115,638.63 = 56,934.36/x
  3. Step 3: Cross multiply
    83,838.56x = 115,638.63 × 56,934.36
  4. Step 4: Simplify right side
    83,838.56x = 6,583,811,390.33
  5. Step 5: Solve for x
    x = 6,583,811,390.33/83,838.56
  6. Step 6: Final answer
    x = 78,529.63

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.