Home / 81,257.02-121,900.78-36,886.90

Finding the Fourth Proportional to 81,257.02, 121,900.78 and 36,886.90

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Solution

The fourth proportional to 81,257.02, 121,900.78 and 36,886.90 is: 55,337.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,257.02 : 121,900.78 = 36,886.90 : x
  2. Step 2: Convert to fraction form
    81,257.02/121,900.78 = 36,886.90/x
  3. Step 3: Cross multiply
    81,257.02x = 121,900.78 × 36,886.90
  4. Step 4: Simplify right side
    81,257.02x = 4,496,541,881.78
  5. Step 5: Solve for x
    x = 4,496,541,881.78/81,257.02
  6. Step 6: Final answer
    x = 55,337.27

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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.