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Finding the Fourth Proportional to 39,971.60, 59,892.60 and 34,139.60

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Solution

The fourth proportional to 39,971.60, 59,892.60 and 34,139.60 is: 51,154.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,971.60 : 59,892.60 = 34,139.60 : x
  2. Step 2: Convert to fraction form
    39,971.60/59,892.60 = 34,139.60/x
  3. Step 3: Cross multiply
    39,971.60x = 59,892.60 × 34,139.60
  4. Step 4: Simplify right side
    39,971.60x = 2,044,709,406.96
  5. Step 5: Solve for x
    x = 2,044,709,406.96/39,971.60
  6. Step 6: Final answer
    x = 51,154.05

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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.