Home / 61,308.20-91,962.30-21,909.80

Finding the Fourth Proportional to 61,308.20, 91,962.30 and 21,909.80

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Solution

The fourth proportional to 61,308.20, 91,962.30 and 21,909.80 is: 32,864.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,308.20 : 91,962.30 = 21,909.80 : x
  2. Step 2: Convert to fraction form
    61,308.20/91,962.30 = 21,909.80/x
  3. Step 3: Cross multiply
    61,308.20x = 91,962.30 × 21,909.80
  4. Step 4: Simplify right side
    61,308.20x = 2,014,875,600.54
  5. Step 5: Solve for x
    x = 2,014,875,600.54/61,308.20
  6. Step 6: Final answer
    x = 32,864.70

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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.