Home / 78,132.15-107,814.65-43,670.43

Finding the Fourth Proportional to 78,132.15, 107,814.65 and 43,670.43

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Solution

The fourth proportional to 78,132.15, 107,814.65 and 43,670.43 is: 60,260.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,132.15 : 107,814.65 = 43,670.43 : x
  2. Step 2: Convert to fraction form
    78,132.15/107,814.65 = 43,670.43/x
  3. Step 3: Cross multiply
    78,132.15x = 107,814.65 × 43,670.43
  4. Step 4: Simplify right side
    78,132.15x = 4,708,311,907.45
  5. Step 5: Solve for x
    x = 4,708,311,907.45/78,132.15
  6. Step 6: Final answer
    x = 60,260.88

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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.