Home / 86,840.79-130,257.21-36,218.91

Finding the Fourth Proportional to 86,840.79, 130,257.21 and 36,218.91

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Solution

The fourth proportional to 86,840.79, 130,257.21 and 36,218.91 is: 54,326.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,840.79 : 130,257.21 = 36,218.91 : x
  2. Step 2: Convert to fraction form
    86,840.79/130,257.21 = 36,218.91/x
  3. Step 3: Cross multiply
    86,840.79x = 130,257.21 × 36,218.91
  4. Step 4: Simplify right side
    86,840.79x = 4,717,774,165.84
  5. Step 5: Solve for x
    x = 4,717,774,165.84/86,840.79
  6. Step 6: Final answer
    x = 54,326.71

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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.