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Finding the Fourth Proportional to 75,281.62, 112,903.52 and 30,920.62

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Solution

The fourth proportional to 75,281.62, 112,903.52 and 30,920.62 is: 46,373.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,281.62 : 112,903.52 = 30,920.62 : x
  2. Step 2: Convert to fraction form
    75,281.62/112,903.52 = 30,920.62/x
  3. Step 3: Cross multiply
    75,281.62x = 112,903.52 × 30,920.62
  4. Step 4: Simplify right side
    75,281.62x = 3,491,046,633.63
  5. Step 5: Solve for x
    x = 3,491,046,633.63/75,281.62
  6. Step 6: Final answer
    x = 46,373.16

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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.