Home / 68,506.02-102,769.28-21,117.17

Finding the Fourth Proportional to 68,506.02, 102,769.28 and 21,117.17

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Solution

The fourth proportional to 68,506.02, 102,769.28 and 21,117.17 is: 31,678.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,506.02 : 102,769.28 = 21,117.17 : x
  2. Step 2: Convert to fraction form
    68,506.02/102,769.28 = 21,117.17/x
  3. Step 3: Cross multiply
    68,506.02x = 102,769.28 × 21,117.17
  4. Step 4: Simplify right side
    68,506.02x = 2,170,195,737.11
  5. Step 5: Solve for x
    x = 2,170,195,737.11/68,506.02
  6. Step 6: Final answer
    x = 31,678.91

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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.