Home / 78,244.32-107,975.52-42,432.96

Finding the Fourth Proportional to 78,244.32, 107,975.52 and 42,432.96

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Solution

The fourth proportional to 78,244.32, 107,975.52 and 42,432.96 is: 58,556.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,244.32 : 107,975.52 = 42,432.96 : x
  2. Step 2: Convert to fraction form
    78,244.32/107,975.52 = 42,432.96/x
  3. Step 3: Cross multiply
    78,244.32x = 107,975.52 × 42,432.96
  4. Step 4: Simplify right side
    78,244.32x = 4,581,720,921.14
  5. Step 5: Solve for x
    x = 4,581,720,921.14/78,244.32
  6. Step 6: Final answer
    x = 58,556.59

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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.