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Finding the Fourth Proportional to 75,324.48, 112,986.72 and 28,577.40

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Solution

The fourth proportional to 75,324.48, 112,986.72 and 28,577.40 is: 42,866.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,324.48 : 112,986.72 = 28,577.40 : x
  2. Step 2: Convert to fraction form
    75,324.48/112,986.72 = 28,577.40/x
  3. Step 3: Cross multiply
    75,324.48x = 112,986.72 × 28,577.40
  4. Step 4: Simplify right side
    75,324.48x = 3,228,866,692.13
  5. Step 5: Solve for x
    x = 3,228,866,692.13/75,324.48
  6. Step 6: Final answer
    x = 42,866.10

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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.