Home / 43,787.20-65,680.80-31,345.60

Finding the Fourth Proportional to 43,787.20, 65,680.80 and 31,345.60

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Solution

The fourth proportional to 43,787.20, 65,680.80 and 31,345.60 is: 47,018.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,787.20 : 65,680.80 = 31,345.60 : x
  2. Step 2: Convert to fraction form
    43,787.20/65,680.80 = 31,345.60/x
  3. Step 3: Cross multiply
    43,787.20x = 65,680.80 × 31,345.60
  4. Step 4: Simplify right side
    43,787.20x = 2,058,804,084.48
  5. Step 5: Solve for x
    x = 2,058,804,084.48/43,787.20
  6. Step 6: Final answer
    x = 47,018.40

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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.