Home / 56,286.04-77,671.32-30,787.60

Finding the Fourth Proportional to 56,286.04, 77,671.32 and 30,787.60

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Solution

The fourth proportional to 56,286.04, 77,671.32 and 30,787.60 is: 42,485.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,286.04 : 77,671.32 = 30,787.60 : x
  2. Step 2: Convert to fraction form
    56,286.04/77,671.32 = 30,787.60/x
  3. Step 3: Cross multiply
    56,286.04x = 77,671.32 × 30,787.60
  4. Step 4: Simplify right side
    56,286.04x = 2,391,313,531.63
  5. Step 5: Solve for x
    x = 2,391,313,531.63/56,286.04
  6. Step 6: Final answer
    x = 42,485.02

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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.