Home / 81,835.64-112,895.04-53,153.28

Finding the Fourth Proportional to 81,835.64, 112,895.04 and 53,153.28

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Solution

The fourth proportional to 81,835.64, 112,895.04 and 53,153.28 is: 73,326.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,835.64 : 112,895.04 = 53,153.28 : x
  2. Step 2: Convert to fraction form
    81,835.64/112,895.04 = 53,153.28/x
  3. Step 3: Cross multiply
    81,835.64x = 112,895.04 × 53,153.28
  4. Step 4: Simplify right side
    81,835.64x = 6,000,741,671.73
  5. Step 5: Solve for x
    x = 6,000,741,671.73/81,835.64
  6. Step 6: Final answer
    x = 73,326.75

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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.