Home / 81,685.33-112,731.75-45,877.46

Finding the Fourth Proportional to 81,685.33, 112,731.75 and 45,877.46

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Solution

The fourth proportional to 81,685.33, 112,731.75 and 45,877.46 is: 63,314.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,685.33 : 112,731.75 = 45,877.46 : x
  2. Step 2: Convert to fraction form
    81,685.33/112,731.75 = 45,877.46/x
  3. Step 3: Cross multiply
    81,685.33x = 112,731.75 × 45,877.46
  4. Step 4: Simplify right side
    81,685.33x = 5,171,845,787.70
  5. Step 5: Solve for x
    x = 5,171,845,787.70/81,685.33
  6. Step 6: Final answer
    x = 63,314.26

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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.