Home / 86,621.05-129,943.88-26,654.50

Finding the Fourth Proportional to 86,621.05, 129,943.88 and 26,654.50

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Solution

The fourth proportional to 86,621.05, 129,943.88 and 26,654.50 is: 39,985.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,621.05 : 129,943.88 = 26,654.50 : x
  2. Step 2: Convert to fraction form
    86,621.05/129,943.88 = 26,654.50/x
  3. Step 3: Cross multiply
    86,621.05x = 129,943.88 × 26,654.50
  4. Step 4: Simplify right side
    86,621.05x = 3,463,589,149.46
  5. Step 5: Solve for x
    x = 3,463,589,149.46/86,621.05
  6. Step 6: Final answer
    x = 39,985.54

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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.