Home / 86,930.12-119,921.23-56,701.73

Finding the Fourth Proportional to 86,930.12, 119,921.23 and 56,701.73

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Solution

The fourth proportional to 86,930.12, 119,921.23 and 56,701.73 is: 78,220.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,930.12 : 119,921.23 = 56,701.73 : x
  2. Step 2: Convert to fraction form
    86,930.12/119,921.23 = 56,701.73/x
  3. Step 3: Cross multiply
    86,930.12x = 119,921.23 × 56,701.73
  4. Step 4: Simplify right side
    86,930.12x = 6,799,741,204.73
  5. Step 5: Solve for x
    x = 6,799,741,204.73/86,930.12
  6. Step 6: Final answer
    x = 78,220.77

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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.