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Finding the Fourth Proportional to 39,043.58, 53,880 and 22,051.40

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Solution

The fourth proportional to 39,043.58, 53,880 and 22,051.40 is: 30,430.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,043.58 : 53,880 = 22,051.40 : x
  2. Step 2: Convert to fraction form
    39,043.58/53,880 = 22,051.40/x
  3. Step 3: Cross multiply
    39,043.58x = 53,880 × 22,051.40
  4. Step 4: Simplify right side
    39,043.58x = 1,188,129,432
  5. Step 5: Solve for x
    x = 1,188,129,432/39,043.58
  6. Step 6: Final answer
    x = 30,430.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.