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Finding the Fourth Proportional to 75,283.21, 112,948.20 and 45,330.42

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Solution

The fourth proportional to 75,283.21, 112,948.20 and 45,330.42 is: 68,009.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,283.21 : 112,948.20 = 45,330.42 : x
  2. Step 2: Convert to fraction form
    75,283.21/112,948.20 = 45,330.42/x
  3. Step 3: Cross multiply
    75,283.21x = 112,948.20 × 45,330.42
  4. Step 4: Simplify right side
    75,283.21x = 5,119,989,344.24
  5. Step 5: Solve for x
    x = 5,119,989,344.24/75,283.21
  6. Step 6: Final answer
    x = 68,009.71

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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.