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Finding the Fourth Proportional to 71,331.60, 98,433.90 and 39,498.60

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Solution

The fourth proportional to 71,331.60, 98,433.90 and 39,498.60 is: 54,506.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,331.60 : 98,433.90 = 39,498.60 : x
  2. Step 2: Convert to fraction form
    71,331.60/98,433.90 = 39,498.60/x
  3. Step 3: Cross multiply
    71,331.60x = 98,433.90 × 39,498.60
  4. Step 4: Simplify right side
    71,331.60x = 3,888,001,242.54
  5. Step 5: Solve for x
    x = 3,888,001,242.54/71,331.60
  6. Step 6: Final answer
    x = 54,506.01

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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.