Home / 68,619.40-102,929.10-64,472.20

Finding the Fourth Proportional to 68,619.40, 102,929.10 and 64,472.20

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Solution

The fourth proportional to 68,619.40, 102,929.10 and 64,472.20 is: 96,708.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,619.40 : 102,929.10 = 64,472.20 : x
  2. Step 2: Convert to fraction form
    68,619.40/102,929.10 = 64,472.20/x
  3. Step 3: Cross multiply
    68,619.40x = 102,929.10 × 64,472.20
  4. Step 4: Simplify right side
    68,619.40x = 6,636,065,521.02
  5. Step 5: Solve for x
    x = 6,636,065,521.02/68,619.40
  6. Step 6: Final answer
    x = 96,708.30

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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.