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Finding the Fourth Proportional to 55,908, 77,153.04 and 30,756.96

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Solution

The fourth proportional to 55,908, 77,153.04 and 30,756.96 is: 42,444.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,908 : 77,153.04 = 30,756.96 : x
  2. Step 2: Convert to fraction form
    55,908/77,153.04 = 30,756.96/x
  3. Step 3: Cross multiply
    55,908x = 77,153.04 × 30,756.96
  4. Step 4: Simplify right side
    55,908x = 2,372,992,965.16
  5. Step 5: Solve for x
    x = 2,372,992,965.16/55,908
  6. Step 6: Final answer
    x = 42,444.60

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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.