Home / 78,532.35-117,753.78-53,602.59

Finding the Fourth Proportional to 78,532.35, 117,753.78 and 53,602.59

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Solution

The fourth proportional to 78,532.35, 117,753.78 and 53,602.59 is: 80,373.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,532.35 : 117,753.78 = 53,602.59 : x
  2. Step 2: Convert to fraction form
    78,532.35/117,753.78 = 53,602.59/x
  3. Step 3: Cross multiply
    78,532.35x = 117,753.78 × 53,602.59
  4. Step 4: Simplify right side
    78,532.35x = 6,311,907,590.29
  5. Step 5: Solve for x
    x = 6,311,907,590.29/78,532.35
  6. Step 6: Final answer
    x = 80,373.34

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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.