Home / 84,901.16-117,046.50-67,731.78

Finding the Fourth Proportional to 84,901.16, 117,046.50 and 67,731.78

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Solution

The fourth proportional to 84,901.16, 117,046.50 and 67,731.78 is: 93,376.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,901.16 : 117,046.50 = 67,731.78 : x
  2. Step 2: Convert to fraction form
    84,901.16/117,046.50 = 67,731.78/x
  3. Step 3: Cross multiply
    84,901.16x = 117,046.50 × 67,731.78
  4. Step 4: Simplify right side
    84,901.16x = 7,927,767,787.77
  5. Step 5: Solve for x
    x = 7,927,767,787.77/84,901.16
  6. Step 6: Final answer
    x = 93,376.44

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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.