Home / 78,905.88-118,355.58-43,823.16

Finding the Fourth Proportional to 78,905.88, 118,355.58 and 43,823.16

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Solution

The fourth proportional to 78,905.88, 118,355.58 and 43,823.16 is: 65,732.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,905.88 : 118,355.58 = 43,823.16 : x
  2. Step 2: Convert to fraction form
    78,905.88/118,355.58 = 43,823.16/x
  3. Step 3: Cross multiply
    78,905.88x = 118,355.58 × 43,823.16
  4. Step 4: Simplify right side
    78,905.88x = 5,186,715,519.23
  5. Step 5: Solve for x
    x = 5,186,715,519.23/78,905.88
  6. Step 6: Final answer
    x = 65,732.94

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1.5x scale

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.