Home / 78,389.03-117,585.78-19,224.65

Finding the Fourth Proportional to 78,389.03, 117,585.78 and 19,224.65

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Solution

The fourth proportional to 78,389.03, 117,585.78 and 19,224.65 is: 28,837.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,389.03 : 117,585.78 = 19,224.65 : x
  2. Step 2: Convert to fraction form
    78,389.03/117,585.78 = 19,224.65/x
  3. Step 3: Cross multiply
    78,389.03x = 117,585.78 × 19,224.65
  4. Step 4: Simplify right side
    78,389.03x = 2,260,545,465.48
  5. Step 5: Solve for x
    x = 2,260,545,465.48/78,389.03
  6. Step 6: Final answer
    x = 28,837.52

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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.