Home / 82,968,021.20-124,452,031.80-68,607,304.40

Finding the Fourth Proportional to 82,968,021.20, 124,452,031.80 and 68,607,304.40

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Solution

The fourth proportional to 82,968,021.20, 124,452,031.80 and 68,607,304.40 is: 102,910,956.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,968,021.20 : 124,452,031.80 = 68,607,304.40 : x
  2. Step 2: Convert to fraction form
    82,968,021.20/124,452,031.80 = 68,607,304.40/x
  3. Step 3: Cross multiply
    82,968,021.20x = 124,452,031.80 × 68,607,304.40
  4. Step 4: Simplify right side
    82,968,021.20x = 8,538,318,428,901,080
  5. Step 5: Solve for x
    x = 8,538,318,428,901,080/82,968,021.20
  6. Step 6: Final answer
    x = 102,910,956.60

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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.