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Finding the Fourth Proportional to 71,226.60, 98,291.52 and 39,394.80

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Solution

The fourth proportional to 71,226.60, 98,291.52 and 39,394.80 is: 54,364.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,226.60 : 98,291.52 = 39,394.80 : x
  2. Step 2: Convert to fraction form
    71,226.60/98,291.52 = 39,394.80/x
  3. Step 3: Cross multiply
    71,226.60x = 98,291.52 × 39,394.80
  4. Step 4: Simplify right side
    71,226.60x = 3,872,174,772.10
  5. Step 5: Solve for x
    x = 3,872,174,772.10/71,226.60
  6. Step 6: Final answer
    x = 54,364.17

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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.