Home / 68,345.32-102,521.06-20,956.95

Finding the Fourth Proportional to 68,345.32, 102,521.06 and 20,956.95

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Solution

The fourth proportional to 68,345.32, 102,521.06 and 20,956.95 is: 31,436.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,345.32 : 102,521.06 = 20,956.95 : x
  2. Step 2: Convert to fraction form
    68,345.32/102,521.06 = 20,956.95/x
  3. Step 3: Cross multiply
    68,345.32x = 102,521.06 × 20,956.95
  4. Step 4: Simplify right side
    68,345.32x = 2,148,528,215.76
  5. Step 5: Solve for x
    x = 2,148,528,215.76/68,345.32
  6. Step 6: Final answer
    x = 31,436.36

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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.