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Finding the Fourth Proportional to 90,973.82, 125,547.74 and 50,687.56

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Solution

The fourth proportional to 90,973.82, 125,547.74 and 50,687.56 is: 69,950.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,973.82 : 125,547.74 = 50,687.56 : x
  2. Step 2: Convert to fraction form
    90,973.82/125,547.74 = 50,687.56/x
  3. Step 3: Cross multiply
    90,973.82x = 125,547.74 × 50,687.56
  4. Step 4: Simplify right side
    90,973.82x = 6,363,708,604.11
  5. Step 5: Solve for x
    x = 6,363,708,604.11/90,973.82
  6. Step 6: Final answer
    x = 69,950.99

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.