Home / 276,905.89-415,358.80-66,543.83

Finding the Fourth Proportional to 276,905.89, 415,358.80 and 66,543.83

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Solution

The fourth proportional to 276,905.89, 415,358.80 and 66,543.83 is: 99,815.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,905.89 : 415,358.80 = 66,543.83 : x
  2. Step 2: Convert to fraction form
    276,905.89/415,358.80 = 66,543.83/x
  3. Step 3: Cross multiply
    276,905.89x = 415,358.80 × 66,543.83
  4. Step 4: Simplify right side
    276,905.89x = 27,639,565,064.96
  5. Step 5: Solve for x
    x = 27,639,565,064.96/276,905.89
  6. Step 6: Final answer
    x = 99,815.74

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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.