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Finding the Fourth Proportional to 71,649.60, 107,475.30 and 21,730.20

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Solution

The fourth proportional to 71,649.60, 107,475.30 and 21,730.20 is: 32,595.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,649.60 : 107,475.30 = 21,730.20 : x
  2. Step 2: Convert to fraction form
    71,649.60/107,475.30 = 21,730.20/x
  3. Step 3: Cross multiply
    71,649.60x = 107,475.30 × 21,730.20
  4. Step 4: Simplify right side
    71,649.60x = 2,335,459,764.06
  5. Step 5: Solve for x
    x = 2,335,459,764.06/71,649.60
  6. Step 6: Final answer
    x = 32,595.57

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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.