Home / 77,268.64-115,902.96-42,189.16

Finding the Fourth Proportional to 77,268.64, 115,902.96 and 42,189.16

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Solution

The fourth proportional to 77,268.64, 115,902.96 and 42,189.16 is: 63,283.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,268.64 : 115,902.96 = 42,189.16 : x
  2. Step 2: Convert to fraction form
    77,268.64/115,902.96 = 42,189.16/x
  3. Step 3: Cross multiply
    77,268.64x = 115,902.96 × 42,189.16
  4. Step 4: Simplify right side
    77,268.64x = 4,889,847,733.45
  5. Step 5: Solve for x
    x = 4,889,847,733.45/77,268.64
  6. Step 6: Final answer
    x = 63,283.73

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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.