Home / 78,333.93-117,541.40-38,890.17

Finding the Fourth Proportional to 78,333.93, 117,541.40 and 38,890.17

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Solution

The fourth proportional to 78,333.93, 117,541.40 and 38,890.17 is: 58,355.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,333.93 : 117,541.40 = 38,890.17 : x
  2. Step 2: Convert to fraction form
    78,333.93/117,541.40 = 38,890.17/x
  3. Step 3: Cross multiply
    78,333.93x = 117,541.40 × 38,890.17
  4. Step 4: Simplify right side
    78,333.93x = 4,571,204,833.59
  5. Step 5: Solve for x
    x = 4,571,204,833.59/78,333.93
  6. Step 6: Final answer
    x = 58,355.36

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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.