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Finding the Fourth Proportional to 57,774.40, 86,661.60 and 16,221.40

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Solution

The fourth proportional to 57,774.40, 86,661.60 and 16,221.40 is: 24,332.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,774.40 : 86,661.60 = 16,221.40 : x
  2. Step 2: Convert to fraction form
    57,774.40/86,661.60 = 16,221.40/x
  3. Step 3: Cross multiply
    57,774.40x = 86,661.60 × 16,221.40
  4. Step 4: Simplify right side
    57,774.40x = 1,405,772,478.24
  5. Step 5: Solve for x
    x = 1,405,772,478.24/57,774.40
  6. Step 6: Final answer
    x = 24,332.10

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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.