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Finding the Fourth Proportional to 61,512.60, 92,312.10 and 39,379.80

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Solution

The fourth proportional to 61,512.60, 92,312.10 and 39,379.80 is: 59,097.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,512.60 : 92,312.10 = 39,379.80 : x
  2. Step 2: Convert to fraction form
    61,512.60/92,312.10 = 39,379.80/x
  3. Step 3: Cross multiply
    61,512.60x = 92,312.10 × 39,379.80
  4. Step 4: Simplify right side
    61,512.60x = 3,635,232,035.58
  5. Step 5: Solve for x
    x = 3,635,232,035.58/61,512.60
  6. Step 6: Final answer
    x = 59,097.36

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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.