Home / 86,212.81-118,973.76-47,975.86

Finding the Fourth Proportional to 86,212.81, 118,973.76 and 47,975.86

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Solution

The fourth proportional to 86,212.81, 118,973.76 and 47,975.86 is: 66,206.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,212.81 : 118,973.76 = 47,975.86 : x
  2. Step 2: Convert to fraction form
    86,212.81/118,973.76 = 47,975.86/x
  3. Step 3: Cross multiply
    86,212.81x = 118,973.76 × 47,975.86
  4. Step 4: Simplify right side
    86,212.81x = 5,707,868,453.43
  5. Step 5: Solve for x
    x = 5,707,868,453.43/86,212.81
  6. Step 6: Final answer
    x = 66,206.73

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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.