Home / 78,153.73-117,043.29-40,102.87

Finding the Fourth Proportional to 78,153.73, 117,043.29 and 40,102.87

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Solution

The fourth proportional to 78,153.73, 117,043.29 and 40,102.87 is: 60,058.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,153.73 : 117,043.29 = 40,102.87 : x
  2. Step 2: Convert to fraction form
    78,153.73/117,043.29 = 40,102.87/x
  3. Step 3: Cross multiply
    78,153.73x = 117,043.29 × 40,102.87
  4. Step 4: Simplify right side
    78,153.73x = 4,693,771,843.24
  5. Step 5: Solve for x
    x = 4,693,771,843.24/78,153.73
  6. Step 6: Final answer
    x = 60,058.19

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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.