Home / 81,311.68-112,196.64-47,784.16

Finding the Fourth Proportional to 81,311.68, 112,196.64 and 47,784.16

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Solution

The fourth proportional to 81,311.68, 112,196.64 and 47,784.16 is: 65,934.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,311.68 : 112,196.64 = 47,784.16 : x
  2. Step 2: Convert to fraction form
    81,311.68/112,196.64 = 47,784.16/x
  3. Step 3: Cross multiply
    81,311.68x = 112,196.64 × 47,784.16
  4. Step 4: Simplify right side
    81,311.68x = 5,361,222,197.22
  5. Step 5: Solve for x
    x = 5,361,222,197.22/81,311.68
  6. Step 6: Final answer
    x = 65,934.22

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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.