Home / 81,811.57-112,851.02-49,925.11

Finding the Fourth Proportional to 81,811.57, 112,851.02 and 49,925.11

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Solution

The fourth proportional to 81,811.57, 112,851.02 and 49,925.11 is: 68,866.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,811.57 : 112,851.02 = 49,925.11 : x
  2. Step 2: Convert to fraction form
    81,811.57/112,851.02 = 49,925.11/x
  3. Step 3: Cross multiply
    81,811.57x = 112,851.02 × 49,925.11
  4. Step 4: Simplify right side
    81,811.57x = 5,634,099,641.39
  5. Step 5: Solve for x
    x = 5,634,099,641.39/81,811.57
  6. Step 6: Final answer
    x = 68,866.78

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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.