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Finding the Fourth Proportional to 78,523.08, 117,785.58 and 43,531.08

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Solution

The fourth proportional to 78,523.08, 117,785.58 and 43,531.08 is: 65,297.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,523.08 : 117,785.58 = 43,531.08 : x
  2. Step 2: Convert to fraction form
    78,523.08/117,785.58 = 43,531.08/x
  3. Step 3: Cross multiply
    78,523.08x = 117,785.58 × 43,531.08
  4. Step 4: Simplify right side
    78,523.08x = 5,127,333,505.83
  5. Step 5: Solve for x
    x = 5,127,333,505.83/78,523.08
  6. Step 6: Final answer
    x = 65,297.15

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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.