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Finding the Fourth Proportional to 61,671.64, 92,511.60 and 21,685.84

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Solution

The fourth proportional to 61,671.64, 92,511.60 and 21,685.84 is: 32,530.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,671.64 : 92,511.60 = 21,685.84 : x
  2. Step 2: Convert to fraction form
    61,671.64/92,511.60 = 21,685.84/x
  3. Step 3: Cross multiply
    61,671.64x = 92,511.60 × 21,685.84
  4. Step 4: Simplify right side
    61,671.64x = 2,006,191,755.74
  5. Step 5: Solve for x
    x = 2,006,191,755.74/61,671.64
  6. Step 6: Final answer
    x = 32,530.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.