Home / 78,265.28-117,384.26-36,141.77

Finding the Fourth Proportional to 78,265.28, 117,384.26 and 36,141.77

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Solution

The fourth proportional to 78,265.28, 117,384.26 and 36,141.77 is: 54,206.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,265.28 : 117,384.26 = 36,141.77 : x
  2. Step 2: Convert to fraction form
    78,265.28/117,384.26 = 36,141.77/x
  3. Step 3: Cross multiply
    78,265.28x = 117,384.26 × 36,141.77
  4. Step 4: Simplify right side
    78,265.28x = 4,242,475,310.36
  5. Step 5: Solve for x
    x = 4,242,475,310.36/78,265.28
  6. Step 6: Final answer
    x = 54,206.35

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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.