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Finding the Fourth Proportional to 65,297.93, 90,148.14 and 49,955.61

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Solution

The fourth proportional to 65,297.93, 90,148.14 and 49,955.61 is: 68,967.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,297.93 : 90,148.14 = 49,955.61 : x
  2. Step 2: Convert to fraction form
    65,297.93/90,148.14 = 49,955.61/x
  3. Step 3: Cross multiply
    65,297.93x = 90,148.14 × 49,955.61
  4. Step 4: Simplify right side
    65,297.93x = 4,503,405,123.34
  5. Step 5: Solve for x
    x = 4,503,405,123.34/65,297.93
  6. Step 6: Final answer
    x = 68,967.05

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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.