Home / 66,719.79-92,064.21-39,856.59

Finding the Fourth Proportional to 66,719.79, 92,064.21 and 39,856.59

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Solution

The fourth proportional to 66,719.79, 92,064.21 and 39,856.59 is: 54,996.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,719.79 : 92,064.21 = 39,856.59 : x
  2. Step 2: Convert to fraction form
    66,719.79/92,064.21 = 39,856.59/x
  3. Step 3: Cross multiply
    66,719.79x = 92,064.21 × 39,856.59
  4. Step 4: Simplify right side
    66,719.79x = 3,669,365,471.64
  5. Step 5: Solve for x
    x = 3,669,365,471.64/66,719.79
  6. Step 6: Final answer
    x = 54,996.66

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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.