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Finding the Fourth Proportional to 61,487.12, 92,243.63 and 19,930.88

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Solution

The fourth proportional to 61,487.12, 92,243.63 and 19,930.88 is: 29,900.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,487.12 : 92,243.63 = 19,930.88 : x
  2. Step 2: Convert to fraction form
    61,487.12/92,243.63 = 19,930.88/x
  3. Step 3: Cross multiply
    61,487.12x = 92,243.63 × 19,930.88
  4. Step 4: Simplify right side
    61,487.12x = 1,838,496,720.29
  5. Step 5: Solve for x
    x = 1,838,496,720.29/61,487.12
  6. Step 6: Final answer
    x = 29,900.52

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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.