Home / 81,256.14-121,899.47-36,886.01

Finding the Fourth Proportional to 81,256.14, 121,899.47 and 36,886.01

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Solution

The fourth proportional to 81,256.14, 121,899.47 and 36,886.01 is: 55,335.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,256.14 : 121,899.47 = 36,886.01 : x
  2. Step 2: Convert to fraction form
    81,256.14/121,899.47 = 36,886.01/x
  3. Step 3: Cross multiply
    81,256.14x = 121,899.47 × 36,886.01
  4. Step 4: Simplify right side
    81,256.14x = 4,496,385,069.41
  5. Step 5: Solve for x
    x = 4,496,385,069.41/81,256.14
  6. Step 6: Final answer
    x = 55,335.94

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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.