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Finding the Fourth Proportional to 71,191.60, 98,249.04 and 40,980.64

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Solution

The fourth proportional to 71,191.60, 98,249.04 and 40,980.64 is: 56,555.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,191.60 : 98,249.04 = 40,980.64 : x
  2. Step 2: Convert to fraction form
    71,191.60/98,249.04 = 40,980.64/x
  3. Step 3: Cross multiply
    71,191.60x = 98,249.04 × 40,980.64
  4. Step 4: Simplify right side
    71,191.60x = 4,026,308,538.59
  5. Step 5: Solve for x
    x = 4,026,308,538.59/71,191.60
  6. Step 6: Final answer
    x = 56,555.95

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1.5x scale

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.