Home / 81,990.17-122,985.29-63,297.50

Finding the Fourth Proportional to 81,990.17, 122,985.29 and 63,297.50

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Solution

The fourth proportional to 81,990.17, 122,985.29 and 63,297.50 is: 94,946.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,990.17 : 122,985.29 = 63,297.50 : x
  2. Step 2: Convert to fraction form
    81,990.17/122,985.29 = 63,297.50/x
  3. Step 3: Cross multiply
    81,990.17x = 122,985.29 × 63,297.50
  4. Step 4: Simplify right side
    81,990.17x = 7,784,661,272.84
  5. Step 5: Solve for x
    x = 7,784,661,272.84/81,990.17
  6. Step 6: Final answer
    x = 94,946.27

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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.