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Finding the Fourth Proportional to 78,777.52, 118,126.80 and 26,168.56

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Solution

The fourth proportional to 78,777.52, 118,126.80 and 26,168.56 is: 39,239.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,777.52 : 118,126.80 = 26,168.56 : x
  2. Step 2: Convert to fraction form
    78,777.52/118,126.80 = 26,168.56/x
  3. Step 3: Cross multiply
    78,777.52x = 118,126.80 × 26,168.56
  4. Step 4: Simplify right side
    78,777.52x = 3,091,208,253.41
  5. Step 5: Solve for x
    x = 3,091,208,253.41/78,777.52
  6. Step 6: Final answer
    x = 39,239.73

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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.