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Finding the Fourth Proportional to 39,820.80, 59,644.80 and 34,636.80

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Solution

The fourth proportional to 39,820.80, 59,644.80 and 34,636.80 is: 51,880.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,820.80 : 59,644.80 = 34,636.80 : x
  2. Step 2: Convert to fraction form
    39,820.80/59,644.80 = 34,636.80/x
  3. Step 3: Cross multiply
    39,820.80x = 59,644.80 × 34,636.80
  4. Step 4: Simplify right side
    39,820.80x = 2,065,905,008.64
  5. Step 5: Solve for x
    x = 2,065,905,008.64/39,820.80
  6. Step 6: Final answer
    x = 51,880.05

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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.