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Finding the Fourth Proportional to 62,987.34, 86,933.86 and 36,138.74

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Solution

The fourth proportional to 62,987.34, 86,933.86 and 36,138.74 is: 49,877.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,987.34 : 86,933.86 = 36,138.74 : x
  2. Step 2: Convert to fraction form
    62,987.34/86,933.86 = 36,138.74/x
  3. Step 3: Cross multiply
    62,987.34x = 86,933.86 × 36,138.74
  4. Step 4: Simplify right side
    62,987.34x = 3,141,680,163.74
  5. Step 5: Solve for x
    x = 3,141,680,163.74/62,987.34
  6. Step 6: Final answer
    x = 49,877.96

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1.5x scale

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.