Home / 39,078,738.30-53,935,115.94-21,680,688.72

Finding the Fourth Proportional to 39,078,738.30, 53,935,115.94 and 21,680,688.72

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Solution

The fourth proportional to 39,078,738.30, 53,935,115.94 and 21,680,688.72 is: 29,922,932.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,078,738.30 : 53,935,115.94 = 21,680,688.72 : x
  2. Step 2: Convert to fraction form
    39,078,738.30/53,935,115.94 = 21,680,688.72/x
  3. Step 3: Cross multiply
    39,078,738.30x = 53,935,115.94 × 21,680,688.72
  4. Step 4: Simplify right side
    39,078,738.30x = 1,169,350,459,772,250
  5. Step 5: Solve for x
    x = 1,169,350,459,772,250/39,078,738.30
  6. Step 6: Final answer
    x = 29,922,932.79

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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.