Home / 78,590.48-117,884.56-19,426.16

Finding the Fourth Proportional to 78,590.48, 117,884.56 and 19,426.16

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Solution

The fourth proportional to 78,590.48, 117,884.56 and 19,426.16 is: 29,138.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,590.48 : 117,884.56 = 19,426.16 : x
  2. Step 2: Convert to fraction form
    78,590.48/117,884.56 = 19,426.16/x
  3. Step 3: Cross multiply
    78,590.48x = 117,884.56 × 19,426.16
  4. Step 4: Simplify right side
    78,590.48x = 2,290,044,324.09
  5. Step 5: Solve for x
    x = 2,290,044,324.09/78,590.48
  6. Step 6: Final answer
    x = 29,138.95

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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.