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Finding the Fourth Proportional to 71,118.91, 98,146.91 and 40,904.19

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Solution

The fourth proportional to 71,118.91, 98,146.91 and 40,904.19 is: 56,449.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,118.91 : 98,146.91 = 40,904.19 : x
  2. Step 2: Convert to fraction form
    71,118.91/98,146.91 = 40,904.19/x
  3. Step 3: Cross multiply
    71,118.91x = 98,146.91 × 40,904.19
  4. Step 4: Simplify right side
    71,118.91x = 4,014,619,650.03
  5. Step 5: Solve for x
    x = 4,014,619,650.03/71,118.91
  6. Step 6: Final answer
    x = 56,449.40

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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.