Home / 66,406.72-91,515-47,511.04

Finding the Fourth Proportional to 66,406.72, 91,515 and 47,511.04

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Solution

The fourth proportional to 66,406.72, 91,515 and 47,511.04 is: 65,474.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,406.72 : 91,515 = 47,511.04 : x
  2. Step 2: Convert to fraction form
    66,406.72/91,515 = 47,511.04/x
  3. Step 3: Cross multiply
    66,406.72x = 91,515 × 47,511.04
  4. Step 4: Simplify right side
    66,406.72x = 4,347,972,825.60
  5. Step 5: Solve for x
    x = 4,347,972,825.60/66,406.72
  6. Step 6: Final answer
    x = 65,474.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.