Home / 78,257.76-117,316.48-28,326.16

Finding the Fourth Proportional to 78,257.76, 117,316.48 and 28,326.16

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Solution

The fourth proportional to 78,257.76, 117,316.48 and 28,326.16 is: 42,463.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,257.76 : 117,316.48 = 28,326.16 : x
  2. Step 2: Convert to fraction form
    78,257.76/117,316.48 = 28,326.16/x
  3. Step 3: Cross multiply
    78,257.76x = 117,316.48 × 28,326.16
  4. Step 4: Simplify right side
    78,257.76x = 3,323,125,383.12
  5. Step 5: Solve for x
    x = 3,323,125,383.12/78,257.76
  6. Step 6: Final answer
    x = 42,463.84

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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.