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Finding the Fourth Proportional to 55,992.16, 77,372.16 and 40,859.20

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Solution

The fourth proportional to 55,992.16, 77,372.16 and 40,859.20 is: 56,460.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,992.16 : 77,372.16 = 40,859.20 : x
  2. Step 2: Convert to fraction form
    55,992.16/77,372.16 = 40,859.20/x
  3. Step 3: Cross multiply
    55,992.16x = 77,372.16 × 40,859.20
  4. Step 4: Simplify right side
    55,992.16x = 3,161,364,559.87
  5. Step 5: Solve for x
    x = 3,161,364,559.87/55,992.16
  6. Step 6: Final answer
    x = 56,460.84

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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.