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Finding the Fourth Proportional to 66,426.60, 99,605.70 and 19,673.40

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Solution

The fourth proportional to 66,426.60, 99,605.70 and 19,673.40 is: 29,499.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,426.60 : 99,605.70 = 19,673.40 : x
  2. Step 2: Convert to fraction form
    66,426.60/99,605.70 = 19,673.40/x
  3. Step 3: Cross multiply
    66,426.60x = 99,605.70 × 19,673.40
  4. Step 4: Simplify right side
    66,426.60x = 1,959,582,778.38
  5. Step 5: Solve for x
    x = 1,959,582,778.38/66,426.60
  6. Step 6: Final answer
    x = 29,499.97

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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.