Home / 84,911.95-117,119.17-72,076.61

Finding the Fourth Proportional to 84,911.95, 117,119.17 and 72,076.61

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Solution

The fourth proportional to 84,911.95, 117,119.17 and 72,076.61 is: 99,415.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,911.95 : 117,119.17 = 72,076.61 : x
  2. Step 2: Convert to fraction form
    84,911.95/117,119.17 = 72,076.61/x
  3. Step 3: Cross multiply
    84,911.95x = 117,119.17 × 72,076.61
  4. Step 4: Simplify right side
    84,911.95x = 8,441,552,387.68
  5. Step 5: Solve for x
    x = 8,441,552,387.68/84,911.95
  6. Step 6: Final answer
    x = 99,415.37

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1.5x scale

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.