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Finding the Fourth Proportional to 56,490.56, 84,763.68 and 39,956.84

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Solution

The fourth proportional to 56,490.56, 84,763.68 and 39,956.84 is: 59,954.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,490.56 : 84,763.68 = 39,956.84 : x
  2. Step 2: Convert to fraction form
    56,490.56/84,763.68 = 39,956.84/x
  3. Step 3: Cross multiply
    56,490.56x = 84,763.68 × 39,956.84
  4. Step 4: Simplify right side
    56,490.56x = 3,386,888,799.57
  5. Step 5: Solve for x
    x = 3,386,888,799.57/56,490.56
  6. Step 6: Final answer
    x = 59,954.95

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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.