Home / 78,428.43-117,576.93-54,666.27

Finding the Fourth Proportional to 78,428.43, 117,576.93 and 54,666.27

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Solution

The fourth proportional to 78,428.43, 117,576.93 and 54,666.27 is: 81,953.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,428.43 : 117,576.93 = 54,666.27 : x
  2. Step 2: Convert to fraction form
    78,428.43/117,576.93 = 54,666.27/x
  3. Step 3: Cross multiply
    78,428.43x = 117,576.93 × 54,666.27
  4. Step 4: Simplify right side
    78,428.43x = 6,427,492,201.15
  5. Step 5: Solve for x
    x = 6,427,492,201.15/78,428.43
  6. Step 6: Final answer
    x = 81,953.60

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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.