Home / 42,778.98-64,179.40-17,810.73

Finding the Fourth Proportional to 42,778.98, 64,179.40 and 17,810.73

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Solution

The fourth proportional to 42,778.98, 64,179.40 and 17,810.73 is: 26,720.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,778.98 : 64,179.40 = 17,810.73 : x
  2. Step 2: Convert to fraction form
    42,778.98/64,179.40 = 17,810.73/x
  3. Step 3: Cross multiply
    42,778.98x = 64,179.40 × 17,810.73
  4. Step 4: Simplify right side
    42,778.98x = 1,143,081,964.96
  5. Step 5: Solve for x
    x = 1,143,081,964.96/42,778.98
  6. Step 6: Final answer
    x = 26,720.65

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1.5x scale

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.