Home / 86,065.12-118,781-48,339.36

Finding the Fourth Proportional to 86,065.12, 118,781 and 48,339.36

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Solution

The fourth proportional to 86,065.12, 118,781 and 48,339.36 is: 66,714.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,065.12 : 118,781 = 48,339.36 : x
  2. Step 2: Convert to fraction form
    86,065.12/118,781 = 48,339.36/x
  3. Step 3: Cross multiply
    86,065.12x = 118,781 × 48,339.36
  4. Step 4: Simplify right side
    86,065.12x = 5,741,797,520.16
  5. Step 5: Solve for x
    x = 5,741,797,520.16/86,065.12
  6. Step 6: Final answer
    x = 66,714.57

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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.