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Finding the Fourth Proportional to 57,677.88, 86,509.68 and 15,561.40

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Solution

The fourth proportional to 57,677.88, 86,509.68 and 15,561.40 is: 23,340.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,677.88 : 86,509.68 = 15,561.40 : x
  2. Step 2: Convert to fraction form
    57,677.88/86,509.68 = 15,561.40/x
  3. Step 3: Cross multiply
    57,677.88x = 86,509.68 × 15,561.40
  4. Step 4: Simplify right side
    57,677.88x = 1,346,211,734.35
  5. Step 5: Solve for x
    x = 1,346,211,734.35/57,677.88
  6. Step 6: Final answer
    x = 23,340.17

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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.