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Finding the Fourth Proportional to 89,950.76, 124,136.90 and 49,664.40

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Solution

The fourth proportional to 89,950.76, 124,136.90 and 49,664.40 is: 68,539.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,950.76 : 124,136.90 = 49,664.40 : x
  2. Step 2: Convert to fraction form
    89,950.76/124,136.90 = 49,664.40/x
  3. Step 3: Cross multiply
    89,950.76x = 124,136.90 × 49,664.40
  4. Step 4: Simplify right side
    89,950.76x = 6,165,184,656.36
  5. Step 5: Solve for x
    x = 6,165,184,656.36/89,950.76
  6. Step 6: Final answer
    x = 68,539.55

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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.