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Finding the Fourth Proportional to 66,328.74, 99,426.63 and 30,815.03

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Solution

The fourth proportional to 66,328.74, 99,426.63 and 30,815.03 is: 46,191.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,328.74 : 99,426.63 = 30,815.03 : x
  2. Step 2: Convert to fraction form
    66,328.74/99,426.63 = 30,815.03/x
  3. Step 3: Cross multiply
    66,328.74x = 99,426.63 × 30,815.03
  4. Step 4: Simplify right side
    66,328.74x = 3,063,834,089.12
  5. Step 5: Solve for x
    x = 3,063,834,089.12/66,328.74
  6. Step 6: Final answer
    x = 46,191.65

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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.