Home / 81,781.03-122,701.92-56,807.92

Finding the Fourth Proportional to 81,781.03, 122,701.92 and 56,807.92

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Solution

The fourth proportional to 81,781.03, 122,701.92 and 56,807.92 is: 85,232.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,781.03 : 122,701.92 = 56,807.92 : x
  2. Step 2: Convert to fraction form
    81,781.03/122,701.92 = 56,807.92/x
  3. Step 3: Cross multiply
    81,781.03x = 122,701.92 × 56,807.92
  4. Step 4: Simplify right side
    81,781.03x = 6,970,440,855.21
  5. Step 5: Solve for x
    x = 6,970,440,855.21/81,781.03
  6. Step 6: Final answer
    x = 85,232.98

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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.