Home / 81,821.63-112,915.23-53,527.32

Finding the Fourth Proportional to 81,821.63, 112,915.23 and 53,527.32

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Solution

The fourth proportional to 81,821.63, 112,915.23 and 53,527.32 is: 73,868.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,821.63 : 112,915.23 = 53,527.32 : x
  2. Step 2: Convert to fraction form
    81,821.63/112,915.23 = 53,527.32/x
  3. Step 3: Cross multiply
    81,821.63x = 112,915.23 × 53,527.32
  4. Step 4: Simplify right side
    81,821.63x = 6,044,049,649.08
  5. Step 5: Solve for x
    x = 6,044,049,649.08/81,821.63
  6. Step 6: Final answer
    x = 73,868.61

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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.