Home / 82,285.20-123,427.80-54,291.60

Finding the Fourth Proportional to 82,285.20, 123,427.80 and 54,291.60

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Solution

The fourth proportional to 82,285.20, 123,427.80 and 54,291.60 is: 81,437.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,285.20 : 123,427.80 = 54,291.60 : x
  2. Step 2: Convert to fraction form
    82,285.20/123,427.80 = 54,291.60/x
  3. Step 3: Cross multiply
    82,285.20x = 123,427.80 × 54,291.60
  4. Step 4: Simplify right side
    82,285.20x = 6,701,092,746.48
  5. Step 5: Solve for x
    x = 6,701,092,746.48/82,285.20
  6. Step 6: Final answer
    x = 81,437.40

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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.