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Finding the Fourth Proportional to 73,126.90, 100,915.37 and 39,592.90

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Solution

The fourth proportional to 73,126.90, 100,915.37 and 39,592.90 is: 54,638.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,126.90 : 100,915.37 = 39,592.90 : x
  2. Step 2: Convert to fraction form
    73,126.90/100,915.37 = 39,592.90/x
  3. Step 3: Cross multiply
    73,126.90x = 100,915.37 × 39,592.90
  4. Step 4: Simplify right side
    73,126.90x = 3,995,532,152.87
  5. Step 5: Solve for x
    x = 3,995,532,152.87/73,126.90
  6. Step 6: Final answer
    x = 54,638.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.