Home / 81,470.85-112,427.84-45,172.11

Finding the Fourth Proportional to 81,470.85, 112,427.84 and 45,172.11

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Solution

The fourth proportional to 81,470.85, 112,427.84 and 45,172.11 is: 62,336.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,470.85 : 112,427.84 = 45,172.11 : x
  2. Step 2: Convert to fraction form
    81,470.85/112,427.84 = 45,172.11/x
  3. Step 3: Cross multiply
    81,470.85x = 112,427.84 × 45,172.11
  4. Step 4: Simplify right side
    81,470.85x = 5,078,602,755.54
  5. Step 5: Solve for x
    x = 5,078,602,755.54/81,470.85
  6. Step 6: Final answer
    x = 62,336.44

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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.