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Finding the Fourth Proportional to 61,229.79, 91,844.69 and 19,680.03

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Solution

The fourth proportional to 61,229.79, 91,844.69 and 19,680.03 is: 29,520.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,229.79 : 91,844.69 = 19,680.03 : x
  2. Step 2: Convert to fraction form
    61,229.79/91,844.69 = 19,680.03/x
  3. Step 3: Cross multiply
    61,229.79x = 91,844.69 × 19,680.03
  4. Step 4: Simplify right side
    61,229.79x = 1,807,506,156.14
  5. Step 5: Solve for x
    x = 1,807,506,156.14/61,229.79
  6. Step 6: Final answer
    x = 29,520.05

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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.