Home / 42,791.76-64,209.51-19,415.16

Finding the Fourth Proportional to 42,791.76, 64,209.51 and 19,415.16

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Solution

The fourth proportional to 42,791.76, 64,209.51 and 19,415.16 is: 29,132.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,791.76 : 64,209.51 = 19,415.16 : x
  2. Step 2: Convert to fraction form
    42,791.76/64,209.51 = 19,415.16/x
  3. Step 3: Cross multiply
    42,791.76x = 64,209.51 × 19,415.16
  4. Step 4: Simplify right side
    42,791.76x = 1,246,637,910.17
  5. Step 5: Solve for x
    x = 1,246,637,910.17/42,791.76
  6. Step 6: Final answer
    x = 29,132.66

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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.