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Finding the Fourth Proportional to 75,859.40, 113,529.90 and 66,528.20

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Solution

The fourth proportional to 75,859.40, 113,529.90 and 66,528.20 is: 99,564.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,859.40 : 113,529.90 = 66,528.20 : x
  2. Step 2: Convert to fraction form
    75,859.40/113,529.90 = 66,528.20/x
  3. Step 3: Cross multiply
    75,859.40x = 113,529.90 × 66,528.20
  4. Step 4: Simplify right side
    75,859.40x = 7,552,939,893.18
  5. Step 5: Solve for x
    x = 7,552,939,893.18/75,859.40
  6. Step 6: Final answer
    x = 99,564.98

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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.