Home / 47,687.31-65,787.93-28,813.50

Finding the Fourth Proportional to 47,687.31, 65,787.93 and 28,813.50

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Solution

The fourth proportional to 47,687.31, 65,787.93 and 28,813.50 is: 39,750.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,687.31 : 65,787.93 = 28,813.50 : x
  2. Step 2: Convert to fraction form
    47,687.31/65,787.93 = 28,813.50/x
  3. Step 3: Cross multiply
    47,687.31x = 65,787.93 × 28,813.50
  4. Step 4: Simplify right side
    47,687.31x = 1,895,580,521.06
  5. Step 5: Solve for x
    x = 1,895,580,521.06/47,687.31
  6. Step 6: Final answer
    x = 39,750.21

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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.