Home / 85,930.27-128,895.40-26,770.70

Finding the Fourth Proportional to 85,930.27, 128,895.40 and 26,770.70

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Solution

The fourth proportional to 85,930.27, 128,895.40 and 26,770.70 is: 40,156.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,930.27 : 128,895.40 = 26,770.70 : x
  2. Step 2: Convert to fraction form
    85,930.27/128,895.40 = 26,770.70/x
  3. Step 3: Cross multiply
    85,930.27x = 128,895.40 × 26,770.70
  4. Step 4: Simplify right side
    85,930.27x = 3,450,620,440.48
  5. Step 5: Solve for x
    x = 3,450,620,440.48/85,930.27
  6. Step 6: Final answer
    x = 40,156.05

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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.