Home / 42,735.13-64,102.75-11,145.17

Finding the Fourth Proportional to 42,735.13, 64,102.75 and 11,145.17

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Solution

The fourth proportional to 42,735.13, 64,102.75 and 11,145.17 is: 16,717.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,735.13 : 64,102.75 = 11,145.17 : x
  2. Step 2: Convert to fraction form
    42,735.13/64,102.75 = 11,145.17/x
  3. Step 3: Cross multiply
    42,735.13x = 64,102.75 × 11,145.17
  4. Step 4: Simplify right side
    42,735.13x = 714,436,046.22
  5. Step 5: Solve for x
    x = 714,436,046.22/42,735.13
  6. Step 6: Final answer
    x = 16,717.77

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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.