Home / 78,716.67-118,058.40-28,820.13

Finding the Fourth Proportional to 78,716.67, 118,058.40 and 28,820.13

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Solution

The fourth proportional to 78,716.67, 118,058.40 and 28,820.13 is: 43,224.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,716.67 : 118,058.40 = 28,820.13 : x
  2. Step 2: Convert to fraction form
    78,716.67/118,058.40 = 28,820.13/x
  3. Step 3: Cross multiply
    78,716.67x = 118,058.40 × 28,820.13
  4. Step 4: Simplify right side
    78,716.67x = 3,402,458,435.59
  5. Step 5: Solve for x
    x = 3,402,458,435.59/78,716.67
  6. Step 6: Final answer
    x = 43,224.12

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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.