Home / 76,485.38-105,530.73-45,863.28

Finding the Fourth Proportional to 76,485.38, 105,530.73 and 45,863.28

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Solution

The fourth proportional to 76,485.38, 105,530.73 and 45,863.28 is: 63,279.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,485.38 : 105,530.73 = 45,863.28 : x
  2. Step 2: Convert to fraction form
    76,485.38/105,530.73 = 45,863.28/x
  3. Step 3: Cross multiply
    76,485.38x = 105,530.73 × 45,863.28
  4. Step 4: Simplify right side
    76,485.38x = 4,839,985,590.58
  5. Step 5: Solve for x
    x = 4,839,985,590.58/76,485.38
  6. Step 6: Final answer
    x = 63,279.88

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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.