Home / 74,076.74-111,126.04-21,479.40

Finding the Fourth Proportional to 74,076.74, 111,126.04 and 21,479.40

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Solution

The fourth proportional to 74,076.74, 111,126.04 and 21,479.40 is: 32,222.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,076.74 : 111,126.04 = 21,479.40 : x
  2. Step 2: Convert to fraction form
    74,076.74/111,126.04 = 21,479.40/x
  3. Step 3: Cross multiply
    74,076.74x = 111,126.04 × 21,479.40
  4. Step 4: Simplify right side
    74,076.74x = 2,386,920,663.58
  5. Step 5: Solve for x
    x = 2,386,920,663.58/74,076.74
  6. Step 6: Final answer
    x = 32,222.27

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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.