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Finding the Fourth Proportional to 75,523.80, 113,285.70 and 70,858.20

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Solution

The fourth proportional to 75,523.80, 113,285.70 and 70,858.20 is: 106,287.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,523.80 : 113,285.70 = 70,858.20 : x
  2. Step 2: Convert to fraction form
    75,523.80/113,285.70 = 70,858.20/x
  3. Step 3: Cross multiply
    75,523.80x = 113,285.70 × 70,858.20
  4. Step 4: Simplify right side
    75,523.80x = 8,027,220,787.74
  5. Step 5: Solve for x
    x = 8,027,220,787.74/75,523.80
  6. Step 6: Final answer
    x = 106,287.30

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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.