Home / 82,031.40-123,047.10-54,037.80

Finding the Fourth Proportional to 82,031.40, 123,047.10 and 54,037.80

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Solution

The fourth proportional to 82,031.40, 123,047.10 and 54,037.80 is: 81,056.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,031.40 : 123,047.10 = 54,037.80 : x
  2. Step 2: Convert to fraction form
    82,031.40/123,047.10 = 54,037.80/x
  3. Step 3: Cross multiply
    82,031.40x = 123,047.10 × 54,037.80
  4. Step 4: Simplify right side
    82,031.40x = 6,649,194,580.38
  5. Step 5: Solve for x
    x = 6,649,194,580.38/82,031.40
  6. Step 6: Final answer
    x = 81,056.70

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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.