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Finding the Fourth Proportional to 75,043.93, 112,510 and 45,454.63

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Solution

The fourth proportional to 75,043.93, 112,510 and 45,454.63 is: 68,148.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,043.93 : 112,510 = 45,454.63 : x
  2. Step 2: Convert to fraction form
    75,043.93/112,510 = 45,454.63/x
  3. Step 3: Cross multiply
    75,043.93x = 112,510 × 45,454.63
  4. Step 4: Simplify right side
    75,043.93x = 5,114,100,421.30
  5. Step 5: Solve for x
    x = 5,114,100,421.30/75,043.93
  6. Step 6: Final answer
    x = 68,148.09

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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.