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Finding the Fourth Proportional to 85,755, 118,341.90 and 48,041.40

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Solution

The fourth proportional to 85,755, 118,341.90 and 48,041.40 is: 66,297.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,755 : 118,341.90 = 48,041.40 : x
  2. Step 2: Convert to fraction form
    85,755/118,341.90 = 48,041.40/x
  3. Step 3: Cross multiply
    85,755x = 118,341.90 × 48,041.40
  4. Step 4: Simplify right side
    85,755x = 5,685,310,554.66
  5. Step 5: Solve for x
    x = 5,685,310,554.66/85,755
  6. Step 6: Final answer
    x = 66,297.13

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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.