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Finding the Fourth Proportional to 42,751.99, 64,127.99 and 11,587.24

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Solution

The fourth proportional to 42,751.99, 64,127.99 and 11,587.24 is: 17,380.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,751.99 : 64,127.99 = 11,587.24 : x
  2. Step 2: Convert to fraction form
    42,751.99/64,127.99 = 11,587.24/x
  3. Step 3: Cross multiply
    42,751.99x = 64,127.99 × 11,587.24
  4. Step 4: Simplify right side
    42,751.99x = 743,066,410.85
  5. Step 5: Solve for x
    x = 743,066,410.85/42,751.99
  6. Step 6: Final answer
    x = 17,380.86

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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.