Home / 68,989.04-103,555.93-61,141.76

Finding the Fourth Proportional to 68,989.04, 103,555.93 and 61,141.76

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Solution

The fourth proportional to 68,989.04, 103,555.93 and 61,141.76 is: 91,776.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,989.04 : 103,555.93 = 61,141.76 : x
  2. Step 2: Convert to fraction form
    68,989.04/103,555.93 = 61,141.76/x
  3. Step 3: Cross multiply
    68,989.04x = 103,555.93 × 61,141.76
  4. Step 4: Simplify right side
    68,989.04x = 6,331,591,818.64
  5. Step 5: Solve for x
    x = 6,331,591,818.64/68,989.04
  6. Step 6: Final answer
    x = 91,776.78

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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.