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Finding the Fourth Proportional to 63,690.47, 87,885.81 and 36,828.89

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Solution

The fourth proportional to 63,690.47, 87,885.81 and 36,828.89 is: 50,819.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,690.47 : 87,885.81 = 36,828.89 : x
  2. Step 2: Convert to fraction form
    63,690.47/87,885.81 = 36,828.89/x
  3. Step 3: Cross multiply
    63,690.47x = 87,885.81 × 36,828.89
  4. Step 4: Simplify right side
    63,690.47x = 3,236,736,389.62
  5. Step 5: Solve for x
    x = 3,236,736,389.62/63,690.47
  6. Step 6: Final answer
    x = 50,819.80

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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.