Home / 81,584.10-122,261.28-64,869.95

Finding the Fourth Proportional to 81,584.10, 122,261.28 and 64,869.95

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Solution

The fourth proportional to 81,584.10, 122,261.28 and 64,869.95 is: 97,213.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,584.10 : 122,261.28 = 64,869.95 : x
  2. Step 2: Convert to fraction form
    81,584.10/122,261.28 = 64,869.95/x
  3. Step 3: Cross multiply
    81,584.10x = 122,261.28 × 64,869.95
  4. Step 4: Simplify right side
    81,584.10x = 7,931,082,509.23
  5. Step 5: Solve for x
    x = 7,931,082,509.23/81,584.10
  6. Step 6: Final answer
    x = 97,213.58

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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.