Home / 42,735.80-64,115.55-17,787.60

Finding the Fourth Proportional to 42,735.80, 64,115.55 and 17,787.60

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Solution

The fourth proportional to 42,735.80, 64,115.55 and 17,787.60 is: 26,686.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,735.80 : 64,115.55 = 17,787.60 : x
  2. Step 2: Convert to fraction form
    42,735.80/64,115.55 = 17,787.60/x
  3. Step 3: Cross multiply
    42,735.80x = 64,115.55 × 17,787.60
  4. Step 4: Simplify right side
    42,735.80x = 1,140,461,757.18
  5. Step 5: Solve for x
    x = 1,140,461,757.18/42,735.80
  6. Step 6: Final answer
    x = 26,686.33

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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.