Home / 42,810.76-64,209.66-11,648.44

Finding the Fourth Proportional to 42,810.76, 64,209.66 and 11,648.44

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Solution

The fourth proportional to 42,810.76, 64,209.66 and 11,648.44 is: 17,470.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,810.76 : 64,209.66 = 11,648.44 : x
  2. Step 2: Convert to fraction form
    42,810.76/64,209.66 = 11,648.44/x
  3. Step 3: Cross multiply
    42,810.76x = 64,209.66 × 11,648.44
  4. Step 4: Simplify right side
    42,810.76x = 747,942,371.93
  5. Step 5: Solve for x
    x = 747,942,371.93/42,810.76
  6. Step 6: Final answer
    x = 17,470.90

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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.