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Finding the Fourth Proportional to 75,246.80, 112,913.40 and 28,533.20

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Solution

The fourth proportional to 75,246.80, 112,913.40 and 28,533.20 is: 42,816.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,246.80 : 112,913.40 = 28,533.20 : x
  2. Step 2: Convert to fraction form
    75,246.80/112,913.40 = 28,533.20/x
  3. Step 3: Cross multiply
    75,246.80x = 112,913.40 × 28,533.20
  4. Step 4: Simplify right side
    75,246.80x = 3,221,780,624.88
  5. Step 5: Solve for x
    x = 3,221,780,624.88/75,246.80
  6. Step 6: Final answer
    x = 42,816.18

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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.