Home / 78,480.14-117,703.60-25,877.12

Finding the Fourth Proportional to 78,480.14, 117,703.60 and 25,877.12

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Solution

The fourth proportional to 78,480.14, 117,703.60 and 25,877.12 is: 38,810.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,480.14 : 117,703.60 = 25,877.12 : x
  2. Step 2: Convert to fraction form
    78,480.14/117,703.60 = 25,877.12/x
  3. Step 3: Cross multiply
    78,480.14x = 117,703.60 × 25,877.12
  4. Step 4: Simplify right side
    78,480.14x = 3,045,830,181.63
  5. Step 5: Solve for x
    x = 3,045,830,181.63/78,480.14
  6. Step 6: Final answer
    x = 38,810.20

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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.