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Finding the Fourth Proportional to 77,606.64, 116,444.52 and 40,662

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Solution

The fourth proportional to 77,606.64, 116,444.52 and 40,662 is: 61,011.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,606.64 : 116,444.52 = 40,662 : x
  2. Step 2: Convert to fraction form
    77,606.64/116,444.52 = 40,662/x
  3. Step 3: Cross multiply
    77,606.64x = 116,444.52 × 40,662
  4. Step 4: Simplify right side
    77,606.64x = 4,734,867,072.24
  5. Step 5: Solve for x
    x = 4,734,867,072.24/77,606.64
  6. Step 6: Final answer
    x = 61,011.11

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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.