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Finding the Fourth Proportional to 75,226.80, 112,883.40 and 28,513.20

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Solution

The fourth proportional to 75,226.80, 112,883.40 and 28,513.20 is: 42,786.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,226.80 : 112,883.40 = 28,513.20 : x
  2. Step 2: Convert to fraction form
    75,226.80/112,883.40 = 28,513.20/x
  3. Step 3: Cross multiply
    75,226.80x = 112,883.40 × 28,513.20
  4. Step 4: Simplify right side
    75,226.80x = 3,218,666,960.88
  5. Step 5: Solve for x
    x = 3,218,666,960.88/75,226.80
  6. Step 6: Final answer
    x = 42,786.17

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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.