Home / 78,582.56-117,875.05-43,743.65

Finding the Fourth Proportional to 78,582.56, 117,875.05 and 43,743.65

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Solution

The fourth proportional to 78,582.56, 117,875.05 and 43,743.65 is: 65,616.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,582.56 : 117,875.05 = 43,743.65 : x
  2. Step 2: Convert to fraction form
    78,582.56/117,875.05 = 43,743.65/x
  3. Step 3: Cross multiply
    78,582.56x = 117,875.05 × 43,743.65
  4. Step 4: Simplify right side
    78,582.56x = 5,156,284,232.20
  5. Step 5: Solve for x
    x = 5,156,284,232.20/78,582.56
  6. Step 6: Final answer
    x = 65,616.14

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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.