Home / 82,677.33-113,925.84-78,211.26

Finding the Fourth Proportional to 82,677.33, 113,925.84 and 78,211.26

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Solution

The fourth proportional to 82,677.33, 113,925.84 and 78,211.26 is: 107,771.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,677.33 : 113,925.84 = 78,211.26 : x
  2. Step 2: Convert to fraction form
    82,677.33/113,925.84 = 78,211.26/x
  3. Step 3: Cross multiply
    82,677.33x = 113,925.84 × 78,211.26
  4. Step 4: Simplify right side
    82,677.33x = 8,910,283,492.96
  5. Step 5: Solve for x
    x = 8,910,283,492.96/82,677.33
  6. Step 6: Final answer
    x = 107,771.79

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1.5x scale

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.