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Finding the Fourth Proportional to 57,800.45, 86,706.45 and 15,681.20

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Solution

The fourth proportional to 57,800.45, 86,706.45 and 15,681.20 is: 23,523.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,800.45 : 86,706.45 = 15,681.20 : x
  2. Step 2: Convert to fraction form
    57,800.45/86,706.45 = 15,681.20/x
  3. Step 3: Cross multiply
    57,800.45x = 86,706.45 × 15,681.20
  4. Step 4: Simplify right side
    57,800.45x = 1,359,660,750.21
  5. Step 5: Solve for x
    x = 1,359,660,750.21/57,800.45
  6. Step 6: Final answer
    x = 23,523.36

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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.