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Finding the Fourth Proportional to 63,018.97, 86,899.30 and 56,671.81

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Solution

The fourth proportional to 63,018.97, 86,899.30 and 56,671.81 is: 78,146.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,018.97 : 86,899.30 = 56,671.81 : x
  2. Step 2: Convert to fraction form
    63,018.97/86,899.30 = 56,671.81/x
  3. Step 3: Cross multiply
    63,018.97x = 86,899.30 × 56,671.81
  4. Step 4: Simplify right side
    63,018.97x = 4,924,740,618.73
  5. Step 5: Solve for x
    x = 4,924,740,618.73/63,018.97
  6. Step 6: Final answer
    x = 78,146.96

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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.