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Finding the Fourth Proportional to 75,362.40, 113,043.52 and 28,615.20

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Solution

The fourth proportional to 75,362.40, 113,043.52 and 28,615.20 is: 42,922.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,362.40 : 113,043.52 = 28,615.20 : x
  2. Step 2: Convert to fraction form
    75,362.40/113,043.52 = 28,615.20/x
  3. Step 3: Cross multiply
    75,362.40x = 113,043.52 × 28,615.20
  4. Step 4: Simplify right side
    75,362.40x = 3,234,762,933.50
  5. Step 5: Solve for x
    x = 3,234,762,933.50/75,362.40
  6. Step 6: Final answer
    x = 42,922.77

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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.