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Finding the Fourth Proportional to 61,196,335.20, 91,794,502.80 and 20,806,819.20

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Solution

The fourth proportional to 61,196,335.20, 91,794,502.80 and 20,806,819.20 is: 31,210,228.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,196,335.20 : 91,794,502.80 = 20,806,819.20 : x
  2. Step 2: Convert to fraction form
    61,196,335.20/91,794,502.80 = 20,806,819.20/x
  3. Step 3: Cross multiply
    61,196,335.20x = 91,794,502.80 × 20,806,819.20
  4. Step 4: Simplify right side
    61,196,335.20x = 1,909,951,623,313,493.75
  5. Step 5: Solve for x
    x = 1,909,951,623,313,493.75/61,196,335.20
  6. Step 6: Final answer
    x = 31,210,228.80

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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.