Home / 74,188.72-111,284.04-20,881.24

Finding the Fourth Proportional to 74,188.72, 111,284.04 and 20,881.24

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Solution

The fourth proportional to 74,188.72, 111,284.04 and 20,881.24 is: 31,322.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,188.72 : 111,284.04 = 20,881.24 : x
  2. Step 2: Convert to fraction form
    74,188.72/111,284.04 = 20,881.24/x
  3. Step 3: Cross multiply
    74,188.72x = 111,284.04 × 20,881.24
  4. Step 4: Simplify right side
    74,188.72x = 2,323,748,747.41
  5. Step 5: Solve for x
    x = 2,323,748,747.41/74,188.72
  6. Step 6: Final answer
    x = 31,322.13

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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.