Home / 74,479.83-111,726.63-21,172.92

Finding the Fourth Proportional to 74,479.83, 111,726.63 and 21,172.92

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Solution

The fourth proportional to 74,479.83, 111,726.63 and 21,172.92 is: 31,761.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,479.83 : 111,726.63 = 21,172.92 : x
  2. Step 2: Convert to fraction form
    74,479.83/111,726.63 = 21,172.92/x
  3. Step 3: Cross multiply
    74,479.83x = 111,726.63 × 21,172.92
  4. Step 4: Simplify right side
    74,479.83x = 2,365,578,998.86
  5. Step 5: Solve for x
    x = 2,365,578,998.86/74,479.83
  6. Step 6: Final answer
    x = 31,761.34

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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.