Home / 117,428.81-162,059.67-66,441.47

Finding the Fourth Proportional to 117,428.81, 162,059.67 and 66,441.47

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Solution

The fourth proportional to 117,428.81, 162,059.67 and 66,441.47 is: 91,693.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,428.81 : 162,059.67 = 66,441.47 : x
  2. Step 2: Convert to fraction form
    117,428.81/162,059.67 = 66,441.47/x
  3. Step 3: Cross multiply
    117,428.81x = 162,059.67 × 66,441.47
  4. Step 4: Simplify right side
    117,428.81x = 10,767,481,892.22
  5. Step 5: Solve for x
    x = 10,767,481,892.22/117,428.81
  6. Step 6: Final answer
    x = 91,693.70

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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.