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Finding the Fourth Proportional to 71,291.28, 98,377.68 and 39,458.28

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Solution

The fourth proportional to 71,291.28, 98,377.68 and 39,458.28 is: 54,450.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,291.28 : 98,377.68 = 39,458.28 : x
  2. Step 2: Convert to fraction form
    71,291.28/98,377.68 = 39,458.28/x
  3. Step 3: Cross multiply
    71,291.28x = 98,377.68 × 39,458.28
  4. Step 4: Simplify right side
    71,291.28x = 3,881,814,043.19
  5. Step 5: Solve for x
    x = 3,881,814,043.19/71,291.28
  6. Step 6: Final answer
    x = 54,450.05

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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.