Home / 76,471.02-105,268.01-66,339.81

Finding the Fourth Proportional to 76,471.02, 105,268.01 and 66,339.81

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Solution

The fourth proportional to 76,471.02, 105,268.01 and 66,339.81 is: 91,321.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,471.02 : 105,268.01 = 66,339.81 : x
  2. Step 2: Convert to fraction form
    76,471.02/105,268.01 = 66,339.81/x
  3. Step 3: Cross multiply
    76,471.02x = 105,268.01 × 66,339.81
  4. Step 4: Simplify right side
    76,471.02x = 6,983,459,450.78
  5. Step 5: Solve for x
    x = 6,983,459,450.78/76,471.02
  6. Step 6: Final answer
    x = 91,321.65

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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.