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Finding the Fourth Proportional to 57,603.20, 86,404.79 and 13,827.20

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Solution

The fourth proportional to 57,603.20, 86,404.79 and 13,827.20 is: 20,740.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,603.20 : 86,404.79 = 13,827.20 : x
  2. Step 2: Convert to fraction form
    57,603.20/86,404.79 = 13,827.20/x
  3. Step 3: Cross multiply
    57,603.20x = 86,404.79 × 13,827.20
  4. Step 4: Simplify right side
    57,603.20x = 1,194,735,811.13
  5. Step 5: Solve for x
    x = 1,194,735,811.13/57,603.20
  6. Step 6: Final answer
    x = 20,740.79

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1.5x scale

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.