Home / 66,426.60-99,659.10-19,680.36

Finding the Fourth Proportional to 66,426.60, 99,659.10 and 19,680.36

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Solution

The fourth proportional to 66,426.60, 99,659.10 and 19,680.36 is: 29,526.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,426.60 : 99,659.10 = 19,680.36 : x
  2. Step 2: Convert to fraction form
    66,426.60/99,659.10 = 19,680.36/x
  3. Step 3: Cross multiply
    66,426.60x = 99,659.10 × 19,680.36
  4. Step 4: Simplify right side
    66,426.60x = 1,961,326,965.28
  5. Step 5: Solve for x
    x = 1,961,326,965.28/66,426.60
  6. Step 6: Final answer
    x = 29,526.23

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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.