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Finding the Fourth Proportional to 65,601.76, 90,544.08 and 40,476.64

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Solution

The fourth proportional to 65,601.76, 90,544.08 and 40,476.64 is: 55,866.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,601.76 : 90,544.08 = 40,476.64 : x
  2. Step 2: Convert to fraction form
    65,601.76/90,544.08 = 40,476.64/x
  3. Step 3: Cross multiply
    65,601.76x = 90,544.08 × 40,476.64
  4. Step 4: Simplify right side
    65,601.76x = 3,664,920,130.29
  5. Step 5: Solve for x
    x = 3,664,920,130.29/65,601.76
  6. Step 6: Final answer
    x = 55,866.19

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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.