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Finding the Fourth Proportional to 71,016.60, 98,005.82 and 40,811.40

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Solution

The fourth proportional to 71,016.60, 98,005.82 and 40,811.40 is: 56,321.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,016.60 : 98,005.82 = 40,811.40 : x
  2. Step 2: Convert to fraction form
    71,016.60/98,005.82 = 40,811.40/x
  3. Step 3: Cross multiply
    71,016.60x = 98,005.82 × 40,811.40
  4. Step 4: Simplify right side
    71,016.60x = 3,999,754,518.29
  5. Step 5: Solve for x
    x = 3,999,754,518.29/71,016.60
  6. Step 6: Final answer
    x = 56,321.40

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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.