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Finding the Fourth Proportional to 89,969.40, 135,051.30 and 50,603.40

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Solution

The fourth proportional to 89,969.40, 135,051.30 and 50,603.40 is: 75,959.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,969.40 : 135,051.30 = 50,603.40 : x
  2. Step 2: Convert to fraction form
    89,969.40/135,051.30 = 50,603.40/x
  3. Step 3: Cross multiply
    89,969.40x = 135,051.30 × 50,603.40
  4. Step 4: Simplify right side
    89,969.40x = 6,834,054,954.42
  5. Step 5: Solve for x
    x = 6,834,054,954.42/89,969.40
  6. Step 6: Final answer
    x = 75,959.77

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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.