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Finding the Fourth Proportional to 78,757.47, 118,004.70 and 55,341.99

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Solution

The fourth proportional to 78,757.47, 118,004.70 and 55,341.99 is: 82,920.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,757.47 : 118,004.70 = 55,341.99 : x
  2. Step 2: Convert to fraction form
    78,757.47/118,004.70 = 55,341.99/x
  3. Step 3: Cross multiply
    78,757.47x = 118,004.70 × 55,341.99
  4. Step 4: Simplify right side
    78,757.47x = 6,530,614,927.35
  5. Step 5: Solve for x
    x = 6,530,614,927.35/78,757.47
  6. Step 6: Final answer
    x = 82,920.58

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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.