Home / 42,738.40-58,945.36-39,873.64

Finding the Fourth Proportional to 42,738.40, 58,945.36 and 39,873.64

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Solution

The fourth proportional to 42,738.40, 58,945.36 and 39,873.64 is: 54,994.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,738.40 : 58,945.36 = 39,873.64 : x
  2. Step 2: Convert to fraction form
    42,738.40/58,945.36 = 39,873.64/x
  3. Step 3: Cross multiply
    42,738.40x = 58,945.36 × 39,873.64
  4. Step 4: Simplify right side
    42,738.40x = 2,350,366,064.31
  5. Step 5: Solve for x
    x = 2,350,366,064.31/42,738.40
  6. Step 6: Final answer
    x = 54,994.25

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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.