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Finding the Fourth Proportional to 71,398.30, 107,097.45 and 21,486.10

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Solution

The fourth proportional to 71,398.30, 107,097.45 and 21,486.10 is: 32,229.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,398.30 : 107,097.45 = 21,486.10 : x
  2. Step 2: Convert to fraction form
    71,398.30/107,097.45 = 21,486.10/x
  3. Step 3: Cross multiply
    71,398.30x = 107,097.45 × 21,486.10
  4. Step 4: Simplify right side
    71,398.30x = 2,301,106,520.45
  5. Step 5: Solve for x
    x = 2,301,106,520.45/71,398.30
  6. Step 6: Final answer
    x = 32,229.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.