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Finding the Fourth Proportional to 75,856.79, 113,208.38 and 67,449.45

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Solution

The fourth proportional to 75,856.79, 113,208.38 and 67,449.45 is: 100,661.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,856.79 : 113,208.38 = 67,449.45 : x
  2. Step 2: Convert to fraction form
    75,856.79/113,208.38 = 67,449.45/x
  3. Step 3: Cross multiply
    75,856.79x = 113,208.38 × 67,449.45
  4. Step 4: Simplify right side
    75,856.79x = 7,635,842,400.35
  5. Step 5: Solve for x
    x = 7,635,842,400.35/75,856.79
  6. Step 6: Final answer
    x = 100,661.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.