Home / 86,623.72-129,857.82-71,927.08

Finding the Fourth Proportional to 86,623.72, 129,857.82 and 71,927.08

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Solution

The fourth proportional to 86,623.72, 129,857.82 and 71,927.08 is: 107,826.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,623.72 : 129,857.82 = 71,927.08 : x
  2. Step 2: Convert to fraction form
    86,623.72/129,857.82 = 71,927.08/x
  3. Step 3: Cross multiply
    86,623.72x = 129,857.82 × 71,927.08
  4. Step 4: Simplify right side
    86,623.72x = 9,340,293,807.77
  5. Step 5: Solve for x
    x = 9,340,293,807.77/86,623.72
  6. Step 6: Final answer
    x = 107,826.05

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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.