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Finding the Fourth Proportional to 75,856.40, 113,525.40 and 66,525.20

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Solution

The fourth proportional to 75,856.40, 113,525.40 and 66,525.20 is: 99,560.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,856.40 : 113,525.40 = 66,525.20 : x
  2. Step 2: Convert to fraction form
    75,856.40/113,525.40 = 66,525.20/x
  3. Step 3: Cross multiply
    75,856.40x = 113,525.40 × 66,525.20
  4. Step 4: Simplify right side
    75,856.40x = 7,552,299,940.08
  5. Step 5: Solve for x
    x = 7,552,299,940.08/75,856.40
  6. Step 6: Final answer
    x = 99,560.48

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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.