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Finding the Fourth Proportional to 66,485.67, 99,765.75 and 35,320.11

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Solution

The fourth proportional to 66,485.67, 99,765.75 and 35,320.11 is: 52,999.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,485.67 : 99,765.75 = 35,320.11 : x
  2. Step 2: Convert to fraction form
    66,485.67/99,765.75 = 35,320.11/x
  3. Step 3: Cross multiply
    66,485.67x = 99,765.75 × 35,320.11
  4. Step 4: Simplify right side
    66,485.67x = 3,523,737,264.23
  5. Step 5: Solve for x
    x = 3,523,737,264.23/66,485.67
  6. Step 6: Final answer
    x = 52,999.95

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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.