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Finding the Fourth Proportional to 61,333.47, 91,980.77 and 19,770.75

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Solution

The fourth proportional to 61,333.47, 91,980.77 and 19,770.75 is: 29,649.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,333.47 : 91,980.77 = 19,770.75 : x
  2. Step 2: Convert to fraction form
    61,333.47/91,980.77 = 19,770.75/x
  3. Step 3: Cross multiply
    61,333.47x = 91,980.77 × 19,770.75
  4. Step 4: Simplify right side
    61,333.47x = 1,818,528,709.62
  5. Step 5: Solve for x
    x = 1,818,528,709.62/61,333.47
  6. Step 6: Final answer
    x = 29,649.86

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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.