Home / 86,001.24-128,976.66-36,079.86

Finding the Fourth Proportional to 86,001.24, 128,976.66 and 36,079.86

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Solution

The fourth proportional to 86,001.24, 128,976.66 and 36,079.86 is: 54,109.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,001.24 : 128,976.66 = 36,079.86 : x
  2. Step 2: Convert to fraction form
    86,001.24/128,976.66 = 36,079.86/x
  3. Step 3: Cross multiply
    86,001.24x = 128,976.66 × 36,079.86
  4. Step 4: Simplify right side
    86,001.24x = 4,653,459,836.07
  5. Step 5: Solve for x
    x = 4,653,459,836.07/86,001.24
  6. Step 6: Final answer
    x = 54,109.22

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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.