Home / 78,389.79-117,589.18-22,225.51

Finding the Fourth Proportional to 78,389.79, 117,589.18 and 22,225.51

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Solution

The fourth proportional to 78,389.79, 117,589.18 and 22,225.51 is: 33,339.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,389.79 : 117,589.18 = 22,225.51 : x
  2. Step 2: Convert to fraction form
    78,389.79/117,589.18 = 22,225.51/x
  3. Step 3: Cross multiply
    78,389.79x = 117,589.18 × 22,225.51
  4. Step 4: Simplify right side
    78,389.79x = 2,613,479,146.45
  5. Step 5: Solve for x
    x = 2,613,479,146.45/78,389.79
  6. Step 6: Final answer
    x = 33,339.53

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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.