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Finding the Fourth Proportional to 45,225.60, 67,819.20 and 21,859.20

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Solution

The fourth proportional to 45,225.60, 67,819.20 and 21,859.20 is: 32,779.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,225.60 : 67,819.20 = 21,859.20 : x
  2. Step 2: Convert to fraction form
    45,225.60/67,819.20 = 21,859.20/x
  3. Step 3: Cross multiply
    45,225.60x = 67,819.20 × 21,859.20
  4. Step 4: Simplify right side
    45,225.60x = 1,482,473,456.64
  5. Step 5: Solve for x
    x = 1,482,473,456.64/45,225.60
  6. Step 6: Final answer
    x = 32,779.52

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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.