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Finding the Fourth Proportional to 65,956.81, 91,141.10 and 48,020.68

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Solution

The fourth proportional to 65,956.81, 91,141.10 and 48,020.68 is: 66,356.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,956.81 : 91,141.10 = 48,020.68 : x
  2. Step 2: Convert to fraction form
    65,956.81/91,141.10 = 48,020.68/x
  3. Step 3: Cross multiply
    65,956.81x = 91,141.10 × 48,020.68
  4. Step 4: Simplify right side
    65,956.81x = 4,376,657,597.95
  5. Step 5: Solve for x
    x = 4,376,657,597.95/65,956.81
  6. Step 6: Final answer
    x = 66,356.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.