Home / 74,320.16-111,487.41-21,013.88

Finding the Fourth Proportional to 74,320.16, 111,487.41 and 21,013.88

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Solution

The fourth proportional to 74,320.16, 111,487.41 and 21,013.88 is: 31,522.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,320.16 : 111,487.41 = 21,013.88 : x
  2. Step 2: Convert to fraction form
    74,320.16/111,487.41 = 21,013.88/x
  3. Step 3: Cross multiply
    74,320.16x = 111,487.41 × 21,013.88
  4. Step 4: Simplify right side
    74,320.16x = 2,342,782,497.81
  5. Step 5: Solve for x
    x = 2,342,782,497.81/74,320.16
  6. Step 6: Final answer
    x = 31,522.84

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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.