Home / 55,668.07-76,822.32-31,139.02

Finding the Fourth Proportional to 55,668.07, 76,822.32 and 31,139.02

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Solution

The fourth proportional to 55,668.07, 76,822.32 and 31,139.02 is: 42,972.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,668.07 : 76,822.32 = 31,139.02 : x
  2. Step 2: Convert to fraction form
    55,668.07/76,822.32 = 31,139.02/x
  3. Step 3: Cross multiply
    55,668.07x = 76,822.32 × 31,139.02
  4. Step 4: Simplify right side
    55,668.07x = 2,392,171,758.93
  5. Step 5: Solve for x
    x = 2,392,171,758.93/55,668.07
  6. Step 6: Final answer
    x = 42,972.06

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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.