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Finding the Fourth Proportional to 74,312.80, 111,469.20 and 34,946.80

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Solution

The fourth proportional to 74,312.80, 111,469.20 and 34,946.80 is: 52,420.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,312.80 : 111,469.20 = 34,946.80 : x
  2. Step 2: Convert to fraction form
    74,312.80/111,469.20 = 34,946.80/x
  3. Step 3: Cross multiply
    74,312.80x = 111,469.20 × 34,946.80
  4. Step 4: Simplify right side
    74,312.80x = 3,895,491,838.56
  5. Step 5: Solve for x
    x = 3,895,491,838.56/74,312.80
  6. Step 6: Final answer
    x = 52,420.20

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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.