Home / 78,294.36-117,441.06-19,130.34

Finding the Fourth Proportional to 78,294.36, 117,441.06 and 19,130.34

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Solution

The fourth proportional to 78,294.36, 117,441.06 and 19,130.34 is: 28,695.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,294.36 : 117,441.06 = 19,130.34 : x
  2. Step 2: Convert to fraction form
    78,294.36/117,441.06 = 19,130.34/x
  3. Step 3: Cross multiply
    78,294.36x = 117,441.06 × 19,130.34
  4. Step 4: Simplify right side
    78,294.36x = 2,246,687,407.76
  5. Step 5: Solve for x
    x = 2,246,687,407.76/78,294.36
  6. Step 6: Final answer
    x = 28,695.39

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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.