Home / 81,897.08-122,838.54-49,867.88

Finding the Fourth Proportional to 81,897.08, 122,838.54 and 49,867.88

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Solution

The fourth proportional to 81,897.08, 122,838.54 and 49,867.88 is: 74,797.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,897.08 : 122,838.54 = 49,867.88 : x
  2. Step 2: Convert to fraction form
    81,897.08/122,838.54 = 49,867.88/x
  3. Step 3: Cross multiply
    81,897.08x = 122,838.54 × 49,867.88
  4. Step 4: Simplify right side
    81,897.08x = 6,125,697,572.10
  5. Step 5: Solve for x
    x = 6,125,697,572.10/81,897.08
  6. Step 6: Final answer
    x = 74,797.51

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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.