Home / 86,026.12-118,718.20-47,783.83

Finding the Fourth Proportional to 86,026.12, 118,718.20 and 47,783.83

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Solution

The fourth proportional to 86,026.12, 118,718.20 and 47,783.83 is: 65,942.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,026.12 : 118,718.20 = 47,783.83 : x
  2. Step 2: Convert to fraction form
    86,026.12/118,718.20 = 47,783.83/x
  3. Step 3: Cross multiply
    86,026.12x = 118,718.20 × 47,783.83
  4. Step 4: Simplify right side
    86,026.12x = 5,672,810,286.71
  5. Step 5: Solve for x
    x = 5,672,810,286.71/86,026.12
  6. Step 6: Final answer
    x = 65,942.89

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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.