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Finding the Fourth Proportional to 75,427.67, 112,969.28 and 36,012.47

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Solution

The fourth proportional to 75,427.67, 112,969.28 and 36,012.47 is: 53,936.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,427.67 : 112,969.28 = 36,012.47 : x
  2. Step 2: Convert to fraction form
    75,427.67/112,969.28 = 36,012.47/x
  3. Step 3: Cross multiply
    75,427.67x = 112,969.28 × 36,012.47
  4. Step 4: Simplify right side
    75,427.67x = 4,068,302,332.11
  5. Step 5: Solve for x
    x = 4,068,302,332.11/75,427.67
  6. Step 6: Final answer
    x = 53,936.47

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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.