Home / 53,910,670.28-80,902,391.11-21,117,171.52

Finding the Fourth Proportional to 53,910,670.28, 80,902,391.11 and 21,117,171.52

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Solution

The fourth proportional to 53,910,670.28, 80,902,391.11 and 21,117,171.52 is: 31,690,009.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,910,670.28 : 80,902,391.11 = 21,117,171.52 : x
  2. Step 2: Convert to fraction form
    53,910,670.28/80,902,391.11 = 21,117,171.52/x
  3. Step 3: Cross multiply
    53,910,670.28x = 80,902,391.11 × 21,117,171.52
  4. Step 4: Simplify right side
    53,910,670.28x = 1,708,429,668,937,895.50
  5. Step 5: Solve for x
    x = 1,708,429,668,937,895.50/53,910,670.28
  6. Step 6: Final answer
    x = 31,690,009.79

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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.