Home / 78,035.72-117,058.85-27,428.59

Finding the Fourth Proportional to 78,035.72, 117,058.85 and 27,428.59

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Solution

The fourth proportional to 78,035.72, 117,058.85 and 27,428.59 is: 41,144.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,035.72 : 117,058.85 = 27,428.59 : x
  2. Step 2: Convert to fraction form
    78,035.72/117,058.85 = 27,428.59/x
  3. Step 3: Cross multiply
    78,035.72x = 117,058.85 × 27,428.59
  4. Step 4: Simplify right side
    78,035.72x = 3,210,758,810.39
  5. Step 5: Solve for x
    x = 3,210,758,810.39/78,035.72
  6. Step 6: Final answer
    x = 41,144.73

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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.