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Finding the Fourth Proportional to 75,638.80, 109,059.84 and 75,638.80

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Solution

The fourth proportional to 75,638.80, 109,059.84 and 75,638.80 is: 109,059.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,638.80 : 109,059.84 = 75,638.80 : x
  2. Step 2: Convert to fraction form
    75,638.80/109,059.84 = 75,638.80/x
  3. Step 3: Cross multiply
    75,638.80x = 109,059.84 × 75,638.80
  4. Step 4: Simplify right side
    75,638.80x = 8,249,155,425.79
  5. Step 5: Solve for x
    x = 8,249,155,425.79/75,638.80
  6. Step 6: Final answer
    x = 109,059.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.44) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.