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Finding the Fourth Proportional to 57,034.80, 85,649.40 and 40,510.80

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Solution

The fourth proportional to 57,034.80, 85,649.40 and 40,510.80 is: 60,835.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,034.80 : 85,649.40 = 40,510.80 : x
  2. Step 2: Convert to fraction form
    57,034.80/85,649.40 = 40,510.80/x
  3. Step 3: Cross multiply
    57,034.80x = 85,649.40 × 40,510.80
  4. Step 4: Simplify right side
    57,034.80x = 3,469,725,713.52
  5. Step 5: Solve for x
    x = 3,469,725,713.52/57,034.80
  6. Step 6: Final answer
    x = 60,835.24

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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.