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Finding the Fourth Proportional to 71,226.76, 98,290.98 and 39,394.60

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Solution

The fourth proportional to 71,226.76, 98,290.98 and 39,394.60 is: 54,363.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,226.76 : 98,290.98 = 39,394.60 : x
  2. Step 2: Convert to fraction form
    71,226.76/98,290.98 = 39,394.60/x
  3. Step 3: Cross multiply
    71,226.76x = 98,290.98 × 39,394.60
  4. Step 4: Simplify right side
    71,226.76x = 3,872,133,840.71
  5. Step 5: Solve for x
    x = 3,872,133,840.71/71,226.76
  6. Step 6: Final answer
    x = 54,363.47

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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.