Home / 78,247.08-107,979.48-42,436.44

Finding the Fourth Proportional to 78,247.08, 107,979.48 and 42,436.44

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Solution

The fourth proportional to 78,247.08, 107,979.48 and 42,436.44 is: 58,561.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,247.08 : 107,979.48 = 42,436.44 : x
  2. Step 2: Convert to fraction form
    78,247.08/107,979.48 = 42,436.44/x
  3. Step 3: Cross multiply
    78,247.08x = 107,979.48 × 42,436.44
  4. Step 4: Simplify right side
    78,247.08x = 4,582,264,724.25
  5. Step 5: Solve for x
    x = 4,582,264,724.25/78,247.08
  6. Step 6: Final answer
    x = 58,561.48

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.