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Finding the Fourth Proportional to 75,480.60, 113,059.68 and 57,511.56

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Solution

The fourth proportional to 75,480.60, 113,059.68 and 57,511.56 is: 86,144.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,480.60 : 113,059.68 = 57,511.56 : x
  2. Step 2: Convert to fraction form
    75,480.60/113,059.68 = 57,511.56/x
  3. Step 3: Cross multiply
    75,480.60x = 113,059.68 × 57,511.56
  4. Step 4: Simplify right side
    75,480.60x = 6,502,238,569.90
  5. Step 5: Solve for x
    x = 6,502,238,569.90/75,480.60
  6. Step 6: Final answer
    x = 86,144.50

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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.