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Finding the Fourth Proportional to 75,404.40, 113,032.20 and 42,140.40

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Solution

The fourth proportional to 75,404.40, 113,032.20 and 42,140.40 is: 63,169.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,404.40 : 113,032.20 = 42,140.40 : x
  2. Step 2: Convert to fraction form
    75,404.40/113,032.20 = 42,140.40/x
  3. Step 3: Cross multiply
    75,404.40x = 113,032.20 × 42,140.40
  4. Step 4: Simplify right side
    75,404.40x = 4,763,222,120.88
  5. Step 5: Solve for x
    x = 4,763,222,120.88/75,404.40
  6. Step 6: Final answer
    x = 63,169.02

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1.5x scale

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.