Home / 39,051,985.28-53,891,738.56-21,648,286.40

Finding the Fourth Proportional to 39,051,985.28, 53,891,738.56 and 21,648,286.40

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Solution

The fourth proportional to 39,051,985.28, 53,891,738.56 and 21,648,286.40 is: 29,874,634.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,051,985.28 : 53,891,738.56 = 21,648,286.40 : x
  2. Step 2: Convert to fraction form
    39,051,985.28/53,891,738.56 = 21,648,286.40/x
  3. Step 3: Cross multiply
    39,051,985.28x = 53,891,738.56 × 21,648,286.40
  4. Step 4: Simplify right side
    39,051,985.28x = 1,166,663,790,940,803.50
  5. Step 5: Solve for x
    x = 1,166,663,790,940,803.50/39,051,985.28
  6. Step 6: Final answer
    x = 29,874,634.61

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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.