Home / 68,512,678.47-94,538,784.69-39,145,912.20

Finding the Fourth Proportional to 68,512,678.47, 94,538,784.69 and 39,145,912.20

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Solution

The fourth proportional to 68,512,678.47, 94,538,784.69 and 39,145,912.20 is: 54,016,381.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,512,678.47 : 94,538,784.69 = 39,145,912.20 : x
  2. Step 2: Convert to fraction form
    68,512,678.47/94,538,784.69 = 39,145,912.20/x
  3. Step 3: Cross multiply
    68,512,678.47x = 94,538,784.69 × 39,145,912.20
  4. Step 4: Simplify right side
    68,512,678.47x = 3,700,806,964,969,444.50
  5. Step 5: Solve for x
    x = 3,700,806,964,969,444.50/68,512,678.47
  6. Step 6: Final answer
    x = 54,016,381.31

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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.