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Finding the Fourth Proportional to 39,977.60, 60,004.80 and 34,140.80

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Solution

The fourth proportional to 39,977.60, 60,004.80 and 34,140.80 is: 51,243.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,977.60 : 60,004.80 = 34,140.80 : x
  2. Step 2: Convert to fraction form
    39,977.60/60,004.80 = 34,140.80/x
  3. Step 3: Cross multiply
    39,977.60x = 60,004.80 × 34,140.80
  4. Step 4: Simplify right side
    39,977.60x = 2,048,611,875.84
  5. Step 5: Solve for x
    x = 2,048,611,875.84/39,977.60
  6. Step 6: Final answer
    x = 51,243.99

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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.