Home / 78,816.67-118,288.05-41,398.81

Finding the Fourth Proportional to 78,816.67, 118,288.05 and 41,398.81

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Solution

The fourth proportional to 78,816.67, 118,288.05 and 41,398.81 is: 62,131.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,816.67 : 118,288.05 = 41,398.81 : x
  2. Step 2: Convert to fraction form
    78,816.67/118,288.05 = 41,398.81/x
  3. Step 3: Cross multiply
    78,816.67x = 118,288.05 × 41,398.81
  4. Step 4: Simplify right side
    78,816.67x = 4,896,984,507.22
  5. Step 5: Solve for x
    x = 4,896,984,507.22/78,816.67
  6. Step 6: Final answer
    x = 62,131.33

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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.