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Finding the Fourth Proportional to 71,581.64, 98,791.74 and 43,287.50

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Solution

The fourth proportional to 71,581.64, 98,791.74 and 43,287.50 is: 59,742.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,581.64 : 98,791.74 = 43,287.50 : x
  2. Step 2: Convert to fraction form
    71,581.64/98,791.74 = 43,287.50/x
  3. Step 3: Cross multiply
    71,581.64x = 98,791.74 × 43,287.50
  4. Step 4: Simplify right side
    71,581.64x = 4,276,447,445.25
  5. Step 5: Solve for x
    x = 4,276,447,445.25/71,581.64
  6. Step 6: Final answer
    x = 59,742.24

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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.