Home / 66,318.66-91,317.06-49,989.59

Finding the Fourth Proportional to 66,318.66, 91,317.06 and 49,989.59

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Solution

The fourth proportional to 66,318.66, 91,317.06 and 49,989.59 is: 68,832.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,318.66 : 91,317.06 = 49,989.59 : x
  2. Step 2: Convert to fraction form
    66,318.66/91,317.06 = 49,989.59/x
  3. Step 3: Cross multiply
    66,318.66x = 91,317.06 × 49,989.59
  4. Step 4: Simplify right side
    66,318.66x = 4,564,901,932.82
  5. Step 5: Solve for x
    x = 4,564,901,932.82/66,318.66
  6. Step 6: Final answer
    x = 68,832.84

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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.