Home / 80,985.64-121,590.06-55,963.72

Finding the Fourth Proportional to 80,985.64, 121,590.06 and 55,963.72

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Solution

The fourth proportional to 80,985.64, 121,590.06 and 55,963.72 is: 84,022.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,985.64 : 121,590.06 = 55,963.72 : x
  2. Step 2: Convert to fraction form
    80,985.64/121,590.06 = 55,963.72/x
  3. Step 3: Cross multiply
    80,985.64x = 121,590.06 × 55,963.72
  4. Step 4: Simplify right side
    80,985.64x = 6,804,632,072.62
  5. Step 5: Solve for x
    x = 6,804,632,072.62/80,985.64
  6. Step 6: Final answer
    x = 84,022.70

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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.