Home / 68,254.27-102,381.63-20,869.18

Finding the Fourth Proportional to 68,254.27, 102,381.63 and 20,869.18

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Solution

The fourth proportional to 68,254.27, 102,381.63 and 20,869.18 is: 31,303.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,254.27 : 102,381.63 = 20,869.18 : x
  2. Step 2: Convert to fraction form
    68,254.27/102,381.63 = 20,869.18/x
  3. Step 3: Cross multiply
    68,254.27x = 102,381.63 × 20,869.18
  4. Step 4: Simplify right side
    68,254.27x = 2,136,620,973.29
  5. Step 5: Solve for x
    x = 2,136,620,973.29/68,254.27
  6. Step 6: Final answer
    x = 31,303.84

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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.